The Mars Sample Return Mission Faces Uncertain Future, NASA Calls for Backup

NASA Space Technology A indispensable NASA mission in the seek for all times previous Earth, Mars Pattern Returnis in wretchedness. Its budget has ballooned from US$5 billion to over $11 billion, and the sample return date would possibly per chance per chance well perhaps additionally streak from the end of this decade to 2040.

The mission could be the first to attempt to return rock samples from Mars to Earth so scientists can analyze them for signs of past life.

NASA Administrator Bill Nelson said during a press conference on April 15, 2024, that the mission as currently conceived is too expensive and too slow. NASA gave private companies a month to submit proposals for bringing the samples back in a faster and more affordable way.

As an astronomer who studies cosmology and has written a book about early missions to MarsI’ve been watching the sample return saga unfold. Mars is the closest and only target to search for life beyond Earth, and if this ambitious NASA mission falters, scientists would lose their chance to learn much more about the red planet.

NASA Space Technology The Habitability Of Mars

The first NASA missions to attain the outside of Mars in 1976 printed the planet as a frigid barren rep 22 situation, uninhabitable without a thick atmosphere to defend life from the Sun’s ultraviolet radiation. Nevertheless studies conducted over the last decade counsel that the planet would possibly per chance per chance well perhaps additionally agree with been mighty warmer and wetter several billion years ago.

The Curiosity and Perseverance rovers have both shown that the planet’s early atmosphere was suitable for microbial life.

They found the chemical building blocks of life and signs of surface water in the distant past. Curiosity, which landed on Mars in 2012, remains active; its twin, Perseverance, which landed on Mars in 2021will play a crucial role in the sample return mission.

NASA Space Technology Why Astronomers Desire Mars Samples

The first time NASA looked for signs of life in a Mars rock was in 1996. Scientists claimed they’d found tiny fossils of bacteria in the Martian meteorite ALH84001. This meteorite is a portion of Mars that landed in Antarctica 13,000 years ago and was recovered in 1984. Scientists disagreed over whether or not the meteorite truly ever harbored biology, and today most scientists agree that there isn’t enough evidence to conclude that the rock contains fossils.

Several hundred Martian meteorites have been found on Earth in the past 40 years. They’re free samples that fell to Earth, so while it might seem intuitive to study them, scientists can’t determine where on Mars these meteorites originated. Also, they were blasted off the planet’s surface by impacts, and such violent events could have easily destroyed or altered subtle evidence of life in the rock.

There’s no change for bringing samples back from a rep 22 situation known to have been hospitable to life in the past. This means that, the agency is facing a mark imprint of $700 million per ounce, making these samples the most costly material ever gathered.

NASA Space Technology A Compelling and Complex Mission

Bringing Mars rocks back to Earth is actually the most fascinating mission NASA has ever tried, and the first stage has already started.

Perseverance has collected over two dozen rock and soil samplesdepositing them on the ground of the Jezero Crater, a rep 22 situation that was once flooded with water and could have harbored life. The rover inserts the samples in containers the size of test tubes. Once the rover fills the entire sample tubes, this would possibly per chance per chance well maintain them and bring them to the objective the establish NASA’s Sample Retrieval Lander will land. The Sample Retrieval Lander involves a rocket to gather the samples into orbit around Mars.

An animation showing the Mars Sample Return mission’s design, as created by the Jet Propulsion Laboratory.

The European Space Agency has designed an Earth Return Orbiterwhich is able to rendezvous with the rocket in orbit and capture the basketball-sized sample container. The samples will then be robotically sealed into a biocontainment procedure and transferred to an Earth entry capsule, which is part of the Earth Return Orbiter. After the long journey home, the entry capsule will parachute to the Earth’s surface.

The complex choreography of this mission, which involves a rover, a lander, a rocket, an orbiter and the coordination of two space agencies, is unprecedented. It’s the reason behind the ballooning budget and the prolonged timeline.

NASA Space Technology Sample Return Breaks the Bank

Mars Sample Return has blown a gap in NASA’s budget, which threatens other missions that need funding.

The NASA center behind the mission, the Jet Propulsion Laboratory recently laid off over 500 workers. It’s likely that Mars Sample Return’s budget partly led to the layoffs, but they also stemmed from the Jet Propulsion Laboratory having an overloaded schedule of planetary missions and facing budget cuts.

Within the past year, an independent review board report and a report from the NASA Office of Inspector General raised serious concerns about the viability of the sample return mission. These reports described the mission’s design as overly complex and cited concerns such as inflation, supply chain problems and unrealistic cost and schedule estimates.

NASA is also feeling pressure from Congress. For fiscal year 2024, the Senate Appropriations Committee cut NASA’s planetary science budget by over half a billion dollars. If NASA can’t keep a lid on the costs, the mission could possibly be canceled.

NASA Space Technology Thinking Outside the Box

Faced with these challenges, NASA has put out a call for innovative designs from private industry, with a goal of slashing the mission’s cost and complexity. Proposals are due by May 17, which is an extremely tight timeline for this kind of ambitious effort. And it will be no easy task for private companies to improve on the understanding that experts at the Jet Propulsion Laboratory had over a decade to develop.

A potentially key player in this scenario is the commercial space firm SpaceX. NASA is already partnering with SpaceX on the United States’ return to the Moon. For the Artemis III mission, SpaceX will attempt to land humans on the Moon for the first time in more than 50 years.

Nonetheless, the huge Starship rocket that SpaceX will use for Artemis has had utterly three test flights and needs a lot more development before NASA will have confidence in it with a human crew.

In principle, a Starship rocket could potentially return a substantial payload of Mars rocks in a single two- to three-year mission and at a much lower cost. Nevertheless Starship comes with substantial risks and uncertainties. It’s not certain whether or not that rocket could potentially return the samples that Perseverance has already gathered.

Starship uses a launch padand it will need to be refueled for a return trip. Nevertheless there’s no launch pad or fueling facility at Jezero Crater. Starship is designed to carry people, but if astronauts go to Mars to retrieve the samples, SpaceX will need a Starship rocket that’s even larger than the one it has tested to date.

Sending astronauts also carries extra risk and cost, and a technique involving the use of people could end up being more complex than NASA’s current understanding.

With all these pressures and constraints, NASA has chosen to see whether or not the private sector can come up with a winning solution. We’ll know the answer next month.

Chris Impey is a College Famend Professor of Astronomy on the College of Arizona. This article is republished from The Dialog under a Ingenious Commons license. Study the usual article.

Originally reported by discovermagazine.com. Adapted for our readers.