Space Weather Focused ELaNa CubeSat Deploys from Cygnus Spacecraft

The Cygnus space freighter from Northrop Grumman is pictured moments after its capture with the Canadarm2 robotic arm.
The Cygnus space freighter from Northrop Grumman is pictured moments after its capture with the Canadarm2 robotic arm. Cygnus and the International Space Station were orbiting 271 miles above the Indian Ocean south of Australia at the time this photograph was taken. Photo credit: NASA

The sole CubeSat of the 33rd Educational Launch of Nanosatellites (ELaNa) mission was deployed into space at 6:50 p.m. EDT June 29 from Northrop Grumman’s Cygnus spacecraft hours following its departure from the International Space Station.

The CubeSat, Ionosphere-Thermosphere Scanning Photometer for Ion-Neutral Studies (IT-SPINS), was stowed within the Nanoracks CubeSat Deployer (eNRCSD) mounted on the exterior of the S.S. Katherine Johnson Cygnus spacecraft. Once the Cygnus departed the space station, it remained in orbit to deploy a total of 5 cube satellites, including IT-SPINS, which was deployed into a free-flying orbit at an altitude between 304 and 210 miles (490 and 500 kilometers) above Earth’s surface.

A Nanoracks employee performing the final integration of IT-SPINS into the E-NRCSD
Jake Cornish, a Nanoracks employee, performs the final integration of the Ionosphere-Thermosphere Scanning Photometer for Ion-Neutral Studies (IT-SPINS) CubeSat into the E-NRCSD. Photo credit: Nanoracks

This mission aims to improve space weather forecasting related to dynamic processes in Earth’s ionosphere. The 3U CubeSat is equipped with a sensitive photometric instrument to remotely sense ultraviolet emissions produced when oxygen ions combine with electrons in the ionosphere. This investigation plans to reveal the dynamics of a physical boundary region in Earth’s ionosphere where the oxygen-dominated ionosphere becomes proton dominated with increasing altitude, in a layer known as the Topside Transition Region (TTR).

IT-SPINS launched aboard Northrop Grumman’s 15th NASA contracted cargo resupply mission to the International Space Station from Wallops Flight Facility in Virginia on February 20.

IT-SPINS is the twelfth in a series of CubeSats developed by Montana State University’s Space Science and Engineering Laboratory to advance CubeSat capabilities and conduct scientific investigations to answer question in the Geospace sciences. This mission is sponsored by the National Science Foundation, which has supported it during its development and is supporting the beginning of operations. IT-SPINS was selected by NASA’s CubeSat Launch Initiative (CSLI), which is managed by NASA’s Launch Services Program (LSP) based at Kennedy Space Center. Since its inception in 2010, CSLI has selected 202 CubeSat missions from 42 states, the District of Columbia, and Puerto Rico, and 119 CubeSat projects have launched into space through ELaNa rideshare opportunities.

Stay connected with the ELaNa mission on social media by following LSP at @NASA_LSP on Twitter and @NASALSP on Facebook.

SpaceX’s 22nd Cargo Resupply Mission Underway as Dragon Journeys to Station

A SpaceX Falcon 9 rocket and Dragon spacecraft lift off from Kennedy Space Center's Launch Complex 39A on June 3, 2021.
The SpaceX Falcon 9 rocket carrying the Dragon cargo capsule lifts off from Launch Complex 39A at NASA’s Kennedy Space Center in Florida on June 3, 2021, on the company’s 22nd Commercial Resupply Services mission for the agency to the International Space Station. Liftoff was at 1:29 p.m. EDT. Photo credit: NASA/Kim Shiflett

More than 7,300 pounds of science and research, crew supplies, and vehicle hardware are on their way to the International Space Station, following the picture-perfect launch of SpaceX’s 22nd resupply services mission. SpaceX’s upgraded Dragon spacecraft launched atop the company’s Falcon 9 rocket from Kennedy Space Center’s Launch Complex 39A in Florida, marking the first flight of this Dragon spacecraft. Liftoff occurred at 1:29 p.m. EDT.

An up-close view of the Dragon spacecraft atop SpaceX's Falcon 9 rocket at Launch Complex 39A.
An up-close view of the Dragon spacecraft atop SpaceX’s Falcon 9 rocket at Kennedy Space Center’s Launch Complex 39A in Florida ahead of the company’s 22nd commercial resupply services launch to the International Space Station. Photo credit: NASA

“The vehicles that deliver our crews, they do a great job of getting our crews there safely to and from station, but their cargo capacity is very limited,” said Jeff Arend, manager of the International Space Station Office for Systems Engineering and Integration. “We couldn’t conduct all of the science we do, as well as provide for our crew members, without our cargo resupply vehicles. Our cargo flights are vital to maintaining and fully utilizing our orbiting laboratory.”

The second launch for SpaceX under NASA’s second Commercial Resupply Services contract, the mission will deliver a variety of science and research experiments, including one that could help develop better pharmaceuticals and therapies for treating kidney disease on Earth, a study of cotton root systems that could identify plant varieties that require less water and pesticides, and an experiment using bobtail squid as a model to examine the effects of spaceflight on interactions between beneficial microbes and their animal hosts.

Also included in the delivery are the first two of six new roll-out solar arrays. These will be extracted by a robotic arm and installed by astronauts during a series of spacewalks this summer.

The Falcon 9 rocket's second stage separates from the uncrewed Dragon spacecraft as it continues on the company's 22nd commercial resupply services mission.
The Falcon 9 rocket’s second stage separates from the uncrewed Dragon spacecraft as Dragon continues on its journey to the International Space Station on the company’s 22nd commercial resupply services mission. In this view are the first two of six new solar arrays bound for the orbiting laboratory. Photo credit: NASA

“Over time, our solar arrays age. The first set of arrays have been up there over 20 years,” Arend said. “This augmentation is going to help us fully extend the life of the International Space Station and fully execute our full suite of research as we move forward. And probably most importantly, it allows us to power more science and research, especially in the form of future exploration systems and commercial users.”

About two-and-a-half minutes after liftoff, the Falcon 9’s first stage separated from the rocket, and a few minutes later, successfully landed on the drone ship “Of Course I Still Love You” in the Atlantic Ocean. Next, Dragon separated from the rocket completely. The spacecraft is now in orbit, traveling solo to the space station.

Dragon is slated to arrive at the orbiting laboratory on Saturday, June 5, and will autonomously dock to the space-facing port on the station’s Harmony module. Expedition 65 Flight Engineers Shane Kimbrough and Megan McArthur of NASA will monitor docking operations, and live coverage will air on NASA TV and the agency’s website beginning at 3:30 a.m. EDT. Docking is targeted for 5 a.m.

Dragon will spend more than a month attached to the space station, after which it will return to Earth with up to 5,300 pounds of research and return cargo, splashing down in the Atlantic Ocean off the eastern coast of Florida.

To stay updated on all station activities, follow @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts. Or, follow along the station blog at: https://blogs.nasa.gov/spacestation/.

NASA, SpaceX Ready for Tomorrow’s Cargo Resupply Launch to Station

A prelaunch news conference is held at NASA's Kennedy Space Center in Florida on June 2, 2021, in preparation for SpaceX's 22nd cargo resupply mission.
A prelaunch news conference for SpaceX’s 22nd Commercial Resupply Services mission for NASA to the International Space Station is held on June 2, 2021 at Kennedy Space Center in Florida. From left are Joel Montalbano, manager for International Space Station Program; Jennifer Buchli, deputy chief scientist for International Space Station Program; and Sarah Walker, director, Dragon mission management at SpaceX. The Dragon capsule atop SpaceX’s Falcon 9 rocket is scheduled to lift off from Launch Complex 39A at 1:29 p.m. EDT on Thursday, June 3. Photo credit: NASA/Kim Shiflett

A SpaceX Falcon 9 rocket, topped with the company’s upgraded Dragon spacecraft, stands ready for launch at NASA Kennedy Space Center’s Launch Complex 39A in Florida. Following a prelaunch news conference held at Kennedy, NASA and SpaceX remain on track for the company’s 22nd cargo resupply mission to the International Space Station.

“Just a couple of months ago, the Crew-2 crew got on board, and now they’re waiting to receive all this science and do it, so it’s really exciting for us at SpaceX,” said Sarah Walker, director of Dragon Mission Management at SpaceX. “Thanks to NASA for your ongoing partnership; this is an exciting mission, and tomorrow is just one more example of a long history that we’re thankful for.”

The logo for SpaceX's 22nd commercial resupply services mission to the International Space Station.

Liftoff is slated to occur at 1:29 p.m. EDT Thursday, June 3, and weather officials continue to predict a 60% chance of favorable weather conditions for launch. The primary weather concerns for liftoff are the cumulus cloud rule and flight through precipitation.

“It’s Florida, it’s summertime, and that means showers and storms; the main issue would be a few of those showers that come off of the coast and head toward our launch facility,” said Mark Burger, launch weather officer with Cape Canaveral Space Force Station’s 45th Weather Squadron. “However, given that there’s quite a lot of real estate between each one of those showers, I do think there’s still a better-than-average chance that we’ll be able to thread the needle and get in a good launch opportunity for tomorrow.”

Dragon will deliver more than 7,300 pounds of science and research investigations, supplies, and hardware to the orbiting laboratory and its crew. A few of the investigations arriving in Dragon’s pressurized capsule include an experiment that could help develop better pharmaceuticals and therapies for treating kidney disease on Earth, a study of cotton root systems that could identify plant varieties that require less water and pesticides, and an experiment using bobtail squid as a model to examine the effects of spaceflight on interactions between beneficial microbes and their animal hosts.

The first two of six new solar arrays for the International Space Station have been loaded into Dragon’s unpressurized spacecraft trunk for CRS-22.
The first two of six new solar arrays for the International Space Station have been loaded into Dragon’s unpressurized spacecraft trunk. SpaceX will deliver them to the orbiting laboratory during its next cargo resupply mission, targeted for June 3 at 1:29 p.m. Photo credit: SpaceX

Also included in that delivery are the first two of six new roll-out solar arrays, which will be installed during spacewalks later this month to upgrade the station’s power capabilities.

“With seven crew members on board, the team is really just knocking it out of the park,” said Joel Montalbano, program manager for NASA’s International Space Station Program Office. “The utilization and research that they’re able to do on board, the commercialization efforts, the technology developed for our lunar program – it’s really a pleasure to watch these guys. They’re excited for the mission, and they’re excited to see these two new solar arrays on board.”

About 12 minutes after launch, Dragon will separate from the Falcon 9 rocket’s second stage, starting its solo journey to the space station. The uncrewed spacecraft is scheduled to arrive at the station on Saturday, June 5. Upon its arrival, Dragon will autonomously dock to the space station’s Harmony module, with Expedition 65 Flight Engineers Shane Kimbrough and Megan McArthur of NASA monitoring operations.

After spending about one month attached to the station, Dragon will autonomously undock to begin its journey home. Upon re-entering Earth’s atmosphere, the spacecraft will splash down in the Atlantic Ocean off the eastern coast of Florida, bringing with it experiment samples and return cargo.

Tune in to NASA TV or the agency’s website at 1 p.m. EDT tomorrow, or follow along right here on the blog, for live launch countdown coverage. Learn more about the mission at: https://www.nasa.gov/content/spacex-22-mission-overview.

Hometown Heroes: Students Create Satellite Inspired by Gatlinburg Wildfires

Robertsville Middle School students and mentor working on the ELaNa 36 CubeSat, RamSat
Robertsville Middle School students and their mentor work on the ELaNa 36 CubeSat, RamSat. Photo credit: Robertsville Middle School

RamSat, a small research satellite, or CubeSat, developed by Robertsville Middle School in Oak Ridge, Tennessee, will launch aboard SpaceX’s 22nd Commercial Resupply Services (CRS-22) mission. Lifting off from NASA’s Kennedy Space Center in Florida on June 3 at 1:29 p.m. EDT, CRS-22 will carry 7,300 pounds of cargo, science, and research to the International Space Station. The RamSat CubeSat onboard is on a mission to study forest regrowth in the Gatlinburg area following the 2016 wildfires.

This satellite will use small cameras to capture pictures of growing forests and radio communication to send those images to ground control in Robertsville Middle School’s STEM Classroom. Students will operate the mission using amateur radio frequencies to listen for RamSat flying overhead, send commands to control the spacecraft, and gather image data and information about the spacecraft’s health. RamSat’s mission, which could last up to 18 months, will begin when it deploys from the space station into its own orbit 250 miles above Earth.

The concept for RamSat was created by students, Tyler Dunham and Aidan Hilliard. During its approximately five-year development, over 150 students have had the opportunity to work on the CubeSat. Robertsville Middle School was selected by NASA’s CubeSat Launch Initiative (CSLI) in 2018. CSLI enables the launch of CubeSats designed, built, and operated by students, teachers and faculty, as well as NASA centers and nonprofit organizations. Managed by NASA’s Launch Services Program, the Educational Launch of Nanosatellites (ELaNa) missions provide a deployment opportunity or ride-share launch to space for CubeSats selected by CSLI. RamSat will launch as the sole CubeSat of the agency’s 36th ELaNa mission (ELaNa 36).

Stay connected with the mission on social media by following NASA’s Launch Services Program at @NASA_LSP on Twitter and NASA LSP on Facebook.

SpaceX’s CRS-21 Underway; Upgraded Cargo Dragon En Route to Space Station

Liftoff of SpaceX's CRS-21 mission to the International Space Station.
A SpaceX Falcon 9 rocket lifts off from Launch Complex 39A at Kennedy Space Center in Florida at 11:17 a.m. EST on Dec. 6, 2020, carrying the uncrewed cargo Dragon spacecraft on its journey to the International Space Station for NASA and SpaceX’s 21st Commercial Resupply Services (CRS-21) mission. Dragon will deliver more than 6,400 pounds of science investigations and cargo to the orbiting laboratory. The mission marks the first launch for SpaceX under NASA’s CRS-2 contract. Photo credit: NASA/Kim Shiflett

SpaceX’s upgraded cargo Dragon spacecraft is on its way to the International Space Station after launching atop a Falcon 9 rocket from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Liftoff occurred at 11:17 a.m. EST.

The first launch for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 will deliver supplies, equipment, and materials to directly support dozens of the more than 250 science and research investigations that will occur aboard the orbiting laboratory during Expeditions 64 and 65.

The Nanoracks Bishop Airlock is the first comercially funded airlock bound for the International Space Station on SpaceX's CRS-21 mission.
The Nanoracks Bishop Airlock is packed in the Dragon spacecraft’s trunk on Oct. 12, 2020, inside SpaceX’s processing facility at NASA’s Kennedy Space Center in Florida for its ride to the International Space Station aboard the company’s 21st Commercial Resupply Services (CRS-21) mission. Photo credit: SpaceX

Included in this delivery is the Nanoracks Bishop Airlock, the first commercially owned and operated airlock that, once installed, will provide a variety of capabilities to the space station, such as payload hosting, robotics testing, and satellite deployment. It also will serve as an outside toolbox for crew members conducting spacewalks.

Dragon is scheduled to arrive at the space station tomorrow, Dec. 7. At approximately 1:30 p.m. EST, the spacecraft will autonomously dock to the station’s Harmony module – the first automated docking for a SpaceX cargo resupply mission. Live coverage will begin at 11:30 a.m. EST on NASA TV and the agency’s website. NASA astronauts and Expedition 64 Flight Engineers Kate Rubins and Victor Glover will monitor docking operations.

Cargo Dragon’s arrival at the space station will mark the first time two Dragon spacecraft will be docked to the orbiting laboratory at the same time. The Crew Dragon spacecraft, named Resilience, that brought the Crew-1 astronauts has been docked since its arrival on Nov. 16.

The cargo Dragon spacecraft will remain attached to the space station for about one month, after which it will return to Earth with 5,200 pounds of research and return cargo, splashing down in the Atlantic Ocean.

To stay updated on all station activities, follow @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts. Or, follow along the station blog at: https://blogs.nasa.gov/spacestation/

Live Countdown Coverage Begins for SpaceX’s CRS-21 Mission

SpaceX's CRS-21 mission.
A SpaceX Falcon 9 rocket, with the upgraded cargo Dragon spacecraft atop, stands ready for liftoff at NASA Kennedy Space Center’s Launch Complex 39A in Florida on Dec. 5, 2020, ahead of the company’s 21st Commercial Resupply Services (CRS-21) launch. Liftoff of the Falcon 9 is scheduled for 11:17 a.m. EST on Sunday, Dec. 6. Photo credit: SpaceX

Hello, and good morning from NASA’s Kennedy Space Center in Florida! Live countdown coverage for the launch of SpaceX’s 21st resupply services (CRS-21) mission to the International Space Station has begun – watch now on NASA TV or the agency’s website.

SpaceX's Cargo Dragon spacecraft and Falcon 9 rocket stand ready for liftoff for CRS-21.
The upgraded SpaceX Cargo Dragon spacecraft and Falcon 9 rocket stand ready for liftoff at NASA Kennedy Space Center’s Launch Complex 39A in Florida after being raised to a vertical position on Dec. 2, 2020, ahead of the company’s 21st Commercial Resupply Services (CRS-21) launch. Liftoff of the Falcon 9 is scheduled for 11:17 a.m. on Sunday, Dec. 6. Photo credit: SpaceX

The uncrewed cargo Dragon spacecraft and Falcon 9 rocket are scheduled to lift off from Kennedy’s Launch Complex 39A in just about 30 minutes, at 11:17 a.m. EST. The mission will deliver more than 6,400 pounds of supplies, equipment, and critical materials to support dozens of science and research experiments that will take place during Expeditions 64 and 65.

About 12 minutes after today’s launch, Dragon will separate from the Falcon 9 rocket’s second stage, beginning a series of carefully choreographed thruster firings to reach the orbiting laboratory. Here’s a full look at today’s countdown and ascent milestones. All times are approximate:

COUNTDOWN
Hour/Min/Sec – Events
-00:38:00 – SpaceX Launch Director verifies go for propellant load
-00:35:00 – RP-1 (rocket-grade kerosene) loading begins
-00:35:00 – 1st stage LOX (liquid oxygen) loading begins
-00:16:00 – 2nd stage LOX loading begins
-00:07:00 – Falcon 9 begins pre-launch engine chill
-00:05:00 – Dragon transitions to internal power
-00:01:00 – Command flight computer to begin final prelaunch checks
-00:01:00 – Propellant tanks pressurize for flight
-00:00:45 – SpaceX Launch Director verifies go for launch
-00:00:03 – Engine controller commands engine ignition sequence to start
-00:00:00 – Falcon 9 liftoff

LAUNCH, LANDING AND DRAGON DEPLOYMENT
Hour/Min/Sec – Event
00:01:18 – Max Q (moment of peak mechanical stress on the rocket)
00:02:30 – 1st stage main engine cutoff (MECO)
00:02:34 – 1st and 2nd stages separate
00:02:41 – 2nd stage engine starts
00:06:37 – 1st stage entry burn begins
00:08:38 – 2nd stage engine cutoff (SECO)
00:08:38 – 1st stage landing
00:11:49 – Dragon separates from 2nd stage
00:12:35 – Dragon nosecone open sequence begins

SpaceX Falcon 9 and Cargo Dragon Stand Ready for CRS-21 Launch

A SpaceX Falcon 9 rocket and cargo Dragon spacecraft stand ready for liftoff for the company's CRS-21 mission on Dec. 6, 2020.
A SpaceX Falcon 9 rocket, with the upgraded cargo Dragon spacecraft atop, stands ready for liftoff at NASA Kennedy Space Center’s Launch Complex 39A in Florida on Dec. 5, 2020, ahead of the company’s 21st Commercial Resupply Services (CRS-21) launch. Liftoff of the Falcon 9 is scheduled for 11:17 a.m. EST on Sunday, Dec. 6. Photo credit: SpaceX

A SpaceX Falcon 9 rocket and cargo Dragon spacecraft stand ready for liftoff at NASA Kennedy Space Center’s Launch Complex 39A in Florida for the company’s 21st Commercial Resupply Services (CRS-21) mission to the International Space Station. Launch is scheduled for today, Dec. 6, at 11:17 a.m. EST.

Meteorologists with the U.S. Air Force 45th Space Wing are predicting a 60% chance of favorable weather conditions for today’s launch, with the primary concern revolving around the thick cloud layer rule.

Some of the science that will be delivered on this mission includes 3D engineered heart tissues for a study that will examine how prolonged exposure to microgravity affects the human heart, meteorite samples and microbes to research the formation and biomining of asteroid material in space, and a study that will observe how brain organoids respond to microgravity. More information on these and additional payloads can be found at: https://www.nasa.gov/mission_pages/station/research/news/spacex-21-research-highlights

Tune in to NASA TV or the agency’s website at 10:45 a.m. EST for live launch countdown coverage or follow along right here on the blog.

NASA, SpaceX Now Targeting Dec. 6 for CRS-21 Launch

CRS-20 liftoff
A SpaceX Falcon 9 rocket lifts off from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida at 11:50 p.m. EST on March 6, 2020, carrying the uncrewed cargo Dragon spacecraft on its journey to the International Space Station for NASA and SpaceX’s 20th Commercial Resupply Services (CRS-20) mission. Photo credit: NASA/Tony Gray and Tim Terry

Because of poor weather conditions in the recovery area for today’s planned launch of SpaceX’s 21st commercial resupply services mission to the International Space Station, SpaceX and NASA are now targeting lift off for Sunday, Dec. 6, at 11:17 a.m. EST. Launch coverage will begin at 10:45 a.m. on NASA TV and the agency’s website.

A launch Sunday would lead to docking Monday, Dec. 7, for the Dragon to deliver about 6,400 pounds of important science and research, cargo supplies, and the first privately funded commercial airlock to the Expedition 64 crew aboard the orbiting laboratory.

Follow launch activities at the launch blog and @NASAKennedy and learn more about space station activities by following @space_station and @ISS_Research on Twitter as well as the ISS Facebook and ISS Instagram accounts.

NASA, SpaceX ‘Go’ for Tomorrow’s CRS-21 Launch

A prelaunch news conference is held for CRS-21 on Dec. 4, 2020.
NASA and SpaceX conduct a prelaunch news conference on Dec. 4, 2020, at NASA’s Kennedy Space Center in Florida ahead of SpaceX’s 21st Commercial Resupply Services (CRS-21) launch. From left are: Kenny Todd, deputy program manager of NASA’s International Space Station Program Office; Kirt Costello, chief scientist of NASA’s International Space Station Program Office; Sarah Walker, director of SpaceX Dragon Mission Management; and Melody Lovin, launch and weather officer for the 45th Space Wing’s U.S. Space Force. Photo credit: NASA/Isaac Watson

Following a prelaunch news conference at NASA’s Kennedy Space Center in Florida, NASA and SpaceX remain “go” for tomorrow’s launch of SpaceX’s 21st Commercial Resupply Services mission to the International Space Station.

CRS-21 logo“This morning, we did a mission management team meeting, and we had a unanimous go for this launch and docking,” said Kenny Todd, deputy program manager of NASA’s International Space Station Program Office. “We’re excited to get on with it; we’ll see how things play out over the next couple of days, but hopefully by the middle of the week, we’ll have a Dragon on the way, if not already attached (to station).”

SpaceX’s Falcon 9 rocket, with the upgraded cargo Dragon spacecraft atop, stands poised for launch at Kennedy’s Launch Complex 39A, and weather officials are now predicting a 50% chance of favorable weather conditions for liftoff. While that’s a slight increase over previous launch forecasts, a cold front moving across the state of Florida will have teams keeping a close eye on the weather.

“Previously, it looked like that cold front would be passing right during the launch window, but the trend is now our friend – the models are now bringing that cold front through prior to the launch window,” said Melody Lovin, U.S. Space Force launch and weather officer for the 45th Space Wing.

“Because of that, we’re expecting most of the rain associated with the cold front to be pretty much done before the launch window opens up. We’re not exactly sure when the clouds are going to clear out of the way for us. We’re hoping the earlier the cold front will pass, the more clearing we’ll get.”

SpaceX's Cargo Dragon spacecraft and Falcon 9 rocket stand ready for liftoff for CRS-21.
The upgraded SpaceX Cargo Dragon spacecraft and Falcon 9 rocket stand ready for liftoff at NASA Kennedy Space Center’s Launch Complex 39A in Florida after being raised to a vertical position on Dec. 2, 2020, ahead of the company’s 21st Commercial Resupply Services (CRS-21) launch. Liftoff of the Falcon 9 is scheduled for 11:39 a.m. on Saturday, Dec. 5. Photo credit: SpaceX

The first mission for SpaceX under NASA’s second Commercial Resupply Services contract, CRS-21 will deliver more than 6,400 pounds of supplies, equipment, and critical materials needed to support a variety of science and research investigations that will occur during Expeditions 64 and 65. With SpaceX’s Crew Dragon carrying a crew of four to the orbiting laboratory last month, the mission will also mark the first time two Dragon spacecraft will be attached to the space station simultaneously.

“It really ushers in a season of continuous Dragon presence for the near future,” said Sarah Walker, director of SpaceX Dragon Mission Management. “We’re excited about all of the missions that we’ll be flying for NASA and the International Space Station program, both cargo and crew, and it’s really just an honor to be a part of that.”

Dragon will spend about one month attached to the orbiting laboratory before autonomously undocking and returning to Earth with 5,200 pounds research and return cargo. The spacecraft is slated to splash down in the Atlantic Ocean upon its arrival.

Liftoff is targeted for 11:39 a.m. EST tomorrow, Dec. 5, with live launch countdown coverage beginning at 11:15 a.m. EST. Follow along here on the blog, NASA TV, or the agency’s website. Learn more about the mission at: https://www.nasa.gov/sites/default/files/atoms/files/spacex_crs-21_mision_overview_high_res_0.pdf

CRS-21 Prelaunch News Conference Set for 4 p.m. Today, Dec. 4

A SpaceX Falcon 9 rocket and Cargo Dragon spacecraft stand ready for liftoff for the company's CRS-21 launch.
A SpaceX Falcon 9 rocket, with the upgraded Cargo Dragon spacecraft atop, stands ready for liftoff NASA Kennedy Space Center’s Launch Complex 39A in Florida after being raised to a vertical position on Dec. 2, 2020, ahead of the company’s 21st Commercial Resupply Services (CRS-21) launch. Liftoff of the Falcon 9 is scheduled for 11:39 a.m. on Saturday, Dec. 5. Photo credit: SpaceX

The launch readiness review for SpaceX’s 21st Commercial Resupply Services (CRS-21) mission to the International Space Station has concluded, and the prelaunch news conference is set for 4 p.m. EST today, Dec. 4, from NASA’s Kennedy Space Center in Florida. Watch live on NASA TV or the agency’s website.

Participants include:

  • Kenny Todd, deputy program manager, International Space Station Program Office
  • Kirt Costello, chief scientist, International Space Station Program Office
  • Sarah Walker, director, Dragon Mission Management, SpaceX
  • Melody Lovin, launch weather officer, U.S. Air Force 45th Space Wing

Liftoff of the Falcon 9 rocket and cargo Dragon spacecraft is scheduled for 11:39 a.m. EST tomorrow, Dec. 5, from Kennedy’s Launch Complex 39A. Weather officials with the U.S. Air Force 45th Space Wing are predicting a 50% chance of favorable weather conditions for launch. Primary weather concerns are the cumulus cloud rule and the thick layer cloud rule.