Mars 2020 Perseverance Healthy and on Its Way

The team controlling NASA’s Mars 2020 Perseverance rover has received telemetry (detailed spacecraft data) down from the spacecraft and has also been able to send commands up to the spacecraft, according to Matt Wallace, the mission’s deputy project manager. The team, based at NASA’s Jet Propulsion Laboratory in Southern California, has confirmed that the spacecraft is healthy and on its way to Mars.

Wallace provided a more detailed update on two issues during launch operations:

“First, the proximity of the spacecraft to Earth immediately after launch was saturating the ground station receivers of NASA’s Deep Space Network. This is a known issue that we have encountered on other planetary missions, including during the launch of NASA’s Curiosity rover in 2011. The Perseverance team worked through prepared mitigation strategies that included detuning the receivers and pointing the antennas slightly off-target from the spacecraft to bring the signal within an acceptable range. We are now in lock on telemetry after taking these actions.

“The second issue was a transient event involving temperature on the spacecraft. The mission uses a liquid freon loop to bring heat from the center of the spacecraft to radiators on the cruise stage (the part that helps fly the rover to Mars), which have a view to space. We monitor the difference in temperature between the warm inlet to the radiators and the cooler outlet from the radiators. As the spacecraft entered into Earth’s shadow, the Sun was temporary blocked by Earth, and the outlet temperature dropped. This caused the difference between the warm inlet and cooler outlet to increase. This transient differential tripped an alarm and caused the spacecraft to transition into the standby mode known as ‘safe mode.’

“Modeling by the team predicted something like this could happen during eclipse – the time when the spacecraft is in Earth’s shadow – but we could not create this exact environment for tests prior to launch. Nor did we have flight data from Curiosity, because its trajectory had no eclipse. We set the limits for the temperature differential conservatively tight for triggering a safe mode. The philosophy is that it is far better to trigger a safe mode event when not required, than miss one that is. Safe mode is a stable and acceptable mode for the spacecraft, and triggering safe mode during this transitional phase is not problematic for Mars 2020.

“With the understanding of the causes of these issues, we are conducting the operations necessary to move the spacecraft back out of safe mode and into normal cruise mode.”

Successful Launch Sends Perseverance on Seven-Month Journey to Mars

Mars 2020 Perseverance launch
A United Launch Alliance Atlas V 541 rocket climbs upward after lifting off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida on July 30, 2020, at 7:50 a.m. EDT, carrying NASA’s Mars Perseverance rover and Ingenuity helicopter. Photo credit: NASA/Kim Shiflett

By Jim Cawley
NASA’s Kennedy Space Center

Not obstacles, not complexity — not even a worldwide pandemic — could keep NASA’s Mars 2020 Perseverance rover from blasting off on its historic mission to the Red Planet.

On Thursday, July 30, at 7:50 a.m. EDT, Perseverance lifted off aboard a United Launch Alliance (ULA) Atlas V 541 rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, bound for a Feb. 18, 2021, arrival to Mars, where it will touch down on the surface of Jezero Crater.

“It was an amazing launch; very successful,” NASA Administrator Jim Bridenstine said during Thursday’s post-launch news conference at NASA’s Kennedy Space Center in Florida. “It went right on time, it is on a trajectory now that has been done with pinpoint accuracy, and it is, in fact, on its way to Mars.”

Perseverance, which will reach Mars on Feb. 18, 2021, is carrying seven different scientific instruments. Photo credit: NASA/Tony Gray

Due to the alignment of Earth and Mars, the mission’s launch period would have expired on Aug. 15. That placed increased importance on hitting the window; otherwise, the rover would have needed to be stored for two years, until the next favorable alignment.

“(The ULA and Launch Services team) gave us a perfect launch this morning — right down the middle; couldn’t have aimed us any better,” said Matt Wallace, deputy project manager at NASA’s Jet Propulsion Laboratory. “They really pushed hard to keep us on this limited planetary launch window in 2020.”

With its unique and distinct challenges, COVID-19 certainly threatened that timeline. Wallace admitted there have been “very strenuous moments” in the past few months dealing with the pandemic.

“It really took the entire agency to step up and help us; and they didn’t hesitate,” he said. “The team out there — thousands of people — have really made this a special mission. As people have eluded to, ‘Perseverance’ has become a pretty good name for this mission.”

Launch Director Omar Baez of NASA’s Launch Services Program beamed with pride following his team’s flawless effort.

Derrol Nail, left, NASA Communications, and Moogega Cooper, Planetary Protection engineer at the agency’s Jet Propulsion Laboratory, provide live coverage during Thursday’s launch of the Mars 2020 Perseverance rover. Photo credit: NASA/Frankie Martin

“Fantastic, honored, proud, ecstatic — those are the kind of words I can think of right now,” Baez said. “We hit right at the beginning of the window, and the vehicle performed perfectly. It’s just a proud moment, and I’m glad our program provided what was needed to get this on the way.”

ULA President and CEO Tory Bruno said before the launch that the rocket would leap off of the pad. On a calm, clear, and beautiful Florida day, that’s exactly what happened.

“We ignited, the Atlas performed nominally throughout the mission, and we ended with just an extraordinarily accurate orbital insertion,” Bruno said.

About the size of a car with dimensions similar to the Curiosity rover, Perseverance carries seven different scientific instruments. The rover’s astrobiology mission, developed under NASA’s Mars Exploration Program, will search for signs of past microbial life. It will characterize the planet’s climate and geology, collect samples for future return to Earth, and pave the way for human exploration of the Red Planet.

The mission marks the first time in history that samples will be collected to bring back to Earth from another planet. Another first: Ingenuity, a twin-rotor, solar-powered helicopter attached to the belly of the rover, will become the first aircraft to fly on another world.

Perseverance will spend at least one Martian year, or approximately two Earth years, exploring the landing site region on the Red Planet. Though the mission has a long way to go, Thursday’s launch sent it off to a terrific start.

“I loved it,” said NASA Associate Administrator Thomas Zurbuchen. “It’s like punching a hole in the sky.”

Tune in to today’s Post-Launch News Conference for the Latest on Perseverance

See what NASA and industry leaders have to say about today’s successful Mars 2020 Perseverance rover launch from Cape Canaveral Air Force Station in Florida — and get the latest information on the status of the spacecraft — during a post-launch news conference, beginning at 11:30 a.m.

The show will be broadcast live from NASA’s Kennedy Space Center in Florida on NASA TV and the agency’s website.

Participants include NASA Administrator Jim Bridenstine; NASA Associate Administrator Thomas Zurbuchen; Lori Glaze, Planetary Science Division director, NASA HQ; Matt Wallace, deputy project manager, NASA’s Jet Propulsion Laboratory; Omar Baez, launch director, NASA’s Launch Services Program; and Tory Bruno, United Launch Alliance CEO. We will provide a wrapup from that news conference here, at blogs.nasa.gov/Mars2020.

Atlas V Rocket Packs a Powerful Punch

 

Perseverance on the launch pad
The United Launch Alliance Atlas V 541 rocket will provide the power for today’s launch. Photo credit: NASA

Some fun facts about the United Launch Alliance Atlas V 541 rocket, which will be powering Perseverance off the pad this morning:

  • “We call it ‘The Dominator,’” United Launch Alliance CEO Tory Bruno said.
  • It has four giant solid rocket boosters (SRBs), each putting out 350,000 pounds of thrust.
  • The rocket has about 200 million miles to travel on its transfer orbit.

Today’s the Day: Perseverance Being Prepped for Liftoff!

A United Launch Alliance Atlas V rocket with the Mars 2020 Perseverance rover aboard sits on the pad at Cape Canaveral Air Force Station’s Space Launch Complex 41 on July 30, 2020. Photo credit: NASA

Good morning, and welcome to today’s live blog coverage of NASA’s Mars 2020 Perseverance rover launch! It is a beautiful morning here at NASA’s Kennedy Space Center in Florida.

We are just over an hour away from today’s scheduled 7:50 a.m. EDT liftoff from Cape Canaveral Air Force Station’s Space Launch Complex 41. There is a two-hour launch window. Perseverance will blast off aboard a United Launch Alliance (ULA) Atlas V 541 rocket to embark on its seven-month journey to the Red Planet. NASA’s Launch Services Program, (LSP) based at Kennedy, is managing the launch.

Weather reports have been positive — the U.S. Air Force 45th Weather Squadron predicted an 80% chance of favorable weather conditions for the launch. An updated weather report is expected shortly.

This mission is the culmination of years of dedicated work by thousands of people, including teams from NASA’s Jet Propulsion Laboratory, where the spacecraft was designed and built; Kennedy, where it was assembled; ULA, Lockheed Martin, and scientists from around the world. In the U.S., flight hardware was built in 44 states, involving more than 550 cities, towns and communities.

Perseverance, which will reach Mars on Feb. 18, 2021, is carrying seven different scientific instruments. The rover’s astrobiology mission, developed under NASA’s Mars Exploration Program, will search for signs of past microbial life. Ingenuity, a twin-rotor, solar-powered helicopter attached to the belly of the rover, will become the first aircraft to fly on another world.

NASA Television and the agency’s website will provide live launch coverage starting at 7 a.m. Stay tuned as the mission eclipses multiple milestones — including stage separation, main engine cutoff, and spacecraft separation — or follow along right here at blogs.nasa.gov/Mars2020. NASA will broadcast a post-launch news conference, beginning at 11:30 a.m.

NASA Administrator ‘Exceptionally Excited’ for Mars-Bound Mission

NASA Administrator's briefing for Mars 2020 Perseverance rover launch
NASA Administrator Jim Bridenstine, far left, conducts a briefing at the agency’s Kennedy Space Center in Florida on July 29, 2020, in advance of the launch of the Mars 2020 Perseverance rover scheduled for July 30. Joining him, from left are Kennedy Deputy Director Janet Petro, NASA astronaut Zena Cardman, partially hidden, and NASA Deputy Administrator Jim Morhard. Photo credit: NASA/Isaac Watson

By Jim Cawley
NASA’s Kennedy Space Center

Bursts of Florida afternoon rain showers could not dampen the spirts of NASA leaders on the eve of a much-anticipated mission to Mars.

“I’m exceptionally excited about what we’re about to do because we’re going to launch Mars 2020 with the Perseverance robot,” NASA Administrator Jim Bridenstine said during Wednesday’s briefing at the agency’s Kennedy Space Center. “But there is so much more going on here. This is the first time in history where we’re going to Mars with an explicit mission to find life on another world — ancient life on Mars.”

The briefing was held outdoors near the Florida spaceport’s iconic countdown clock. A temporary structure installed on the Press Site lawn shielded participants and limited media from the typical Sunshine State summer downpour.

The Mars 2020 Perseverance rover is scheduled to lift off aboard a United Launch Alliance Atlas V 541 rocket on Thursday, July 30, from Cape Canaveral Air Force Station’s Space Launch Complex 41 in Florida. The two-hour window opens at 7:50 a.m. EDT. NASA’s Launch Services Program, based at Kennedy, is managing the launch.

Despite dealing with significant challenges associated with COVID-19, Kennedy (and its surrounding area) is hosting the second major launch in two months. SpaceX’s Demo-2 mission, carrying NASA astronauts Douglas Hurley and Robert Behnken to the International Space Station, lifted off from Launch Complex 39A on May 30.

“When we started 2020, we knew we were going to have a big year at the spaceport,” Kennedy Deputy Director Janet Petro said. “And I think the events and the milestones of the next couple days are really going to demonstrate that.”

Developed under NASA’s Mars Exploration Program, the rover will search for signs of past microbial life. Perseverance will reach Mars on Feb. 18, 2021, touching down on the surface of Jezero Crater.

Attached to the belly of the rover and weighing less than four pounds is NASA’s Mars Helicopter, Ingenuity. The twin-rotor, solar-powered helicopter will become the first aircraft to fly on another world.

“Ingenuity is going to transform how we think about exploring worlds in the future,” Bridenstine said.

The rover will collect and store a set of rock and soil samples that could be returned to Earth by future Mars sample return missions. It also will test new technologies to benefit future robotic and human exploration of Mars.

“In 2026, we’re going to launch a mission from Earth to Mars to go pick up those samples and bring them back to Earth,” Bridenstine said. “For the first time in history, we’re doing a Mars sample return mission.”

NASA Television and the agency’s website will provide live launch coverage tomorrow morning, starting at 7. Stay tuned as the mission eclipses multiple milestones — including stage separation, main engine cutoff, and spacecraft separation — or follow along at blogs.nasa.gov/Mars2020. NASA will broadcast a post-launch news conference, beginning at 11:30 a.m.

Weather Outlook Remains Positive for Tomorrow Morning’s Liftoff

Students who named Perseverance and Ingenuity
Students Alex Mather, at left, and Vaneeza Rupani, stand near the countdown clock at the News Center at NASA’s Kennedy Space Center in Florida on July 28, 2020. Mather named the Perseverance rover, and Rupani named the Ingenuity helicopter. Photo credit: NASA/Kim Shiflett

With less than 24 hours to go until launch, the weather is doing its part to cooperate.

The U.S. Air Force 45th Weather Squadron is continuing to predict an 80% chance of favorable weather conditions for the Thursday, July 30, liftoff of a United Launch Alliance Atlas V rocket, carrying NASA’s Mars 2020 Perseverance rover. Primary weather concerns for launch are cumulus and thick clouds.

Perseverance is scheduled to blast off tomorrow morning from Space Launch Complex 41 at nearby Cape Canaveral Air Force Station in Florida. The two-hour window opens at 7:50 a.m. EDT. NASA’s Launch Services Program, based at Kennedy Space Center, is managing the launch.

Tune in to NASA Television or the agency’s website today at noon to view a briefing with NASA Administrator Jim Bridenstine, live from Kennedy. Follow along at blogs.nasa.gov/Mars2020 for a recap of this afternoon’s event, as well as a preview of live countdown and launch coverage, starting tomorrow at 7 a.m.

Bridenstine Leads Briefing Today on Eve of Perseverance Launch

NASA Administrator Jim Bridenstine at Mars 2020 Perseverance rollout
NASA Administrator Jim Bridenstine attends the rollout of the United Launch Alliance Atlas V 541 rocket, carrying NASA’s Mars Perseverance rover and Ingenuity helicopter, as it rolls along to the launch pad at Space Launch Complex 41 at Cape Canaveral Air Force Station on July 28, 2020. Photo credit: NASA/Ben Smegelsky

NASA Administrator Jim Bridenstine will conduct a briefing today at noon at the agency’s Kennedy Space Center in Florida, in advance of Thursday’s Mars 2020 Perseverance rover launch.

Also participating in the briefing are: NASA Deputy Administrator Jim Morhard, Kennedy Deputy Director Janet Petro and NASA astronaut Zena Cardman. The event, scheduled for one hour, will be held outdoors, near NASA’s historic countdown clock. It can be viewed on NASA Television and the agency’s website.

The rover is scheduled to lift off aboard a United Launch Alliance Atlas V 541 rocket on Thursday, July 30, from Cape Canaveral Air Force Station’s Space Launch Complex 41 in Florida. The two-hour window opens at 7:50 a.m. EDT. NASA’s Launch Services Program, based at Kennedy, is managing the launch.

Arriving on Mars on Feb. 18, 2021, Perseverance will search for signs of past microbial life and help scientists better understand the geology and climate of Mars. The mission is part of America’s larger Moon to Mars exploration approach that includes missions to the Moon as a way to prepare for human exploration of the Red Planet.

Perseverance Remains on Track for Thursday Launch

Mars 2020 Sample Return briefing
Jia-Rui Cook with NASA’s Jet Propulsion Laboratory moderates a Mars 2020 Sample Return briefing at NASA’s Kennedy Space Center in Florida on July 28, 2020. NASA/Kim Shiflett

By Jim Cawley
NASA’s Kennedy Space Center

With two days to go until NASA’s Mars 2020 Perseverance rover blasts off on its seven-month journey to the Red Planet, everything is proceeding as planned.

On Tuesday, July 28, the rover made the one-third-mile trek from United Launch Alliance’s (ULA) Vertical Integration Facility to Cape Canaveral Air Force Station’s Space Launch Complex 41 in Florida. Now positioned at the pad, Perseverance is scheduled to launch aboard a United Launch Alliance Atlas V 541 rocket on Thursday, July 30. The two-hour window opens at 7:50 a.m. EDT. NASA’s Launch Services Program, (LSP) based at Kennedy, is managing the launch.

Weather reports are positive. The U.S. Air Force 45th Weather Squadron is predicting an 80% chance of favorable weather conditions for the launch. The primary weather concerns are cumulus and thick clouds.

Several obstacles — including navigating a worldwide pandemic — have been overcome to keep the mission on schedule.

“COVID has placed a heck of a burden on us to get through this,” Launch Director Omar Baez, LSP, said during Tuesday’s NASA Edge Rollout show. “So it lives up to its name, Perseverance, and we’re living it every day.”

“It has been quite the learning experience for the whole program — and the agency,” Baez continued. “But now, we’re really excited.”

Also Tuesday, NASA’s Kennedy Space Center hosted a pair of live shows highlighting the importance and impact of Perseverance’s mission: a Mars Sample Return briefing and a Mission Technology and Humans to Mars briefing. The rover will collect and store a set of rock and soil samples that could be returned to Earth by future Mars sample return missions.

“We’re looking to accomplish one of the most complex things humanity has ever attempted,” Mars Sample Return Program Director Jeff Gramling said. “With the launch of Perseverance will be the first step in a mission to bring back samples from another planet.”

Developed under NASA’s Mars Exploration Program, the rover will search for signs of past microbial life and help scientists better understand the geology and climate of Mars. Perseverance will reach Mars on Feb. 18, 2021, touching down on the surface of Jezero Crater. Lessons learned from the mission will pave the way for human exploration of the Red Planet.

Mars Rover Makes its Way to the Launch Pad

Mars 2020 rollout
The United Launch Alliance Atlas V 541 rocket, carrying NASA’s Mars Perseverance rover and Ingenuity helicopter, rolls along to the launch pad at Space Launch Complex 41 at Cape Canaveral Air Force Station on July 28, 2020. Photo credit: NASA/Ben Smegelsky

Perseverance was on the move.

On Tuesday, July 28, at 10:24 a.m., NASA’s Mars 2020 Perseverance rover began the one-third-mile trek from United Launch Alliance’s (ULA) Vertical Integration Facility to Cape Canaveral Air Force Station’s Space Launch Complex 41. The ULA Atlas V 541 rocket, with Perseverance aboard, was transported at speeds of 3 to 4 miles per hour during the approximately 30-minute trip.

Now positioned at the pad, Perseverance is scheduled to launch from Florida on Thursday, July 30. The two-hour window opens at 7:50 a.m. EDT. NASA’s Launch Services Program, based at Kennedy, is managing the launch.

The U.S. Air Force 45th Weather Squadron is continuing to predict an 80% chance of favorable weather conditions for the launch. The primary weather concerns for launch are cumulus and thick clouds.

Developed under NASA’s Mars Exploration Program, the rover will search for signs of past microbial life. For more information on Perseverance and its mission, visit the mission website.