Subscribe to our free daily newsletters
. 24/7 Space News .

Subscribe to our free daily newsletters

A Rusty Old Rose

At NASA's Jet Propulsion Laboratory, a simulated Mars landscape, called the MarsYard, was developed to test rovers and robotic technology for future Mars exploration.
by Henry Bortman
for NASA Science News
Moffett Field - May 8, 2001
It's been nearly 25 years since NASA sent biological experiments to Mars. Chris McKay, a planetary scientist at NASA's Ames Research Center and a member of the NASA Astrobiology Institute, thinks it's time to try again.

McKay helped organize a NASA conference last year on terraforming -- that is, what it might take to make Mars fit for human habitation.

In a presentation at the conference, McKay proposed an intriguing experiment.

"I'd like to see NASA send a seed to Mars and try to grow it into a plant." It would be important, he stressed, to "use the sunlight, the soil and the nutrients that are available on Mars." McKay suggested that growing a flowering plant on the Red Planet might serve both as a valuable biology experiment and as a powerful symbol of humanity's expansion beyond Earth.

"One of the things that I'm very interested in is the notion of Mars as a home for life," he says. "If we think of life as being the main thread of the Mars exploration program, then I advocate that we should get serious about sending life to Mars."

Not everyone at NASA shares McKay's immediate enthusiasm for the project, however.

John Rummel, NASA's Planetary Protection Officer, is one who has some doubts. Rummel believes that to try "to grow plants on Mars would take power and other resources" that could be put to better use. "We would need to do a lot of analysis of Mars surface material before sending a biological experiment there," he cautioned.

Rummel doesn't disagree that growing a plant on Mars could serve as a powerful symbol. He wonders, though, what the symbolic impact might be if the experiment failed. "If we want to think of Mars as a place where Earth organisms can grow, we want to know it will work."

Rummel suggests a more pragmatic approach to finding out whether plants could grow in Martian soil: bring the soil back to Earth. "If we're going to challenge Earth organisms with Mars soil," he says, we could do it with returned samples.

Mike Meyer, NASA's Astrobiology Discipline Scientist, agrees with Rummel. He believes that it's important to take a step-by-step approach to understanding the potential for life on Mars. "If we learn enough about the soil on Mars," Meyer argues, "we can simulate Mars here. Then we'd know what we want to test. Otherwise, we'd end up saying, 'Golly, it died, now what?'"

Meyer also makes another point. Until there is a concrete plan to send humans to Mars who will need to grow plants for food, there's no particular hurry to find out whether the plants could grow there. "We would need some reasonable commitment that we'd be sending humans to Mars before we'd do such an experiment," he argued.

McKay has heard these arguments before, but he's not swayed. "There are many logical reasons not to send a plant to Mars on a near-term mission," McKay concedes. But, he counters, "it is a bold and dramatic step that will, in my humble opinion, push the biological agenda for Mars ahead significantly."

"If we're going to send humans to Mars," he adds, "we need to begin studying [that planet's] ability to support human life." And the sooner the better.

NASA does have funding in its budget to investigate some questions relevant to possible future human exploration of Mars. The 2001 Mars Odyssey spacecraft, for example, contains an experiment to measure the amount of damaging radiation that humans traveling to Mars might face.

NASA also plans to send two "Mars Exploration Rovers" to the Red Planet in 2003. Experiments performed by the rovers will help to determine whether resources are available on Mars that will be needed to support humans living there.

The European Space Agency will launch a mission in 2003 as well -- a combined orbiter/lander. Current plans are for its lander, Beagle 2, to contain biological experiments designed to search directly for evidence of life on Mars.

Future missions will perform even more experiments to investigate the possibilities and challenges of supporting a human outpost on Mars -- a daunting job made easier, perhaps, by oxygen-giving, food-producing plants.

NASA's Mars-exploration roadmap contains no plan to actually send astronauts there for the next 20 years. But one day humans explorers surely will venture to the Red Planet, and they might want to take a few leafy green companions with them.

  • Greening The Red Planet

    Related Links
    Terraforming Science
    The Physics And Biology Of Making Mars Habitable
    Search SpaceDaily
    Subscribe To SpaceDaily Express

    Genetically Modified Plants Could Glow On Mars
    Gainesville - May 8, 2001
    In what reads like a story from a 1950s science fiction magazine, a team of University of Florida scientists has genetically modified a tiny plant to send reports back from Mars in a most unworldly way: by emitting an eerie, fluorescent glow.

    Thanks for being here;
    We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

    With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

    Our news coverage takes time and effort to publish 365 days a year.

    If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

    SpaceDaily Contributor
    $5 Billed Once

    credit card or paypal
    SpaceDaily Monthly Supporter
    $5 Billed Monthly

    paypal only

    Memory Foam Mattress Review
    Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
    XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2016 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.