Korean Student Tiger Teams Explore Growing Food on Mars

Farming on Mars: NASA Ponders Food Supply for 2030s Mission

Future astronauts may grow some of their meals inside greenhouses, such as this Martian growth chamber, where fruits and vegetables could be grown hydroponically, without soil.

Credit: Pat Rawlings/NASA

WASHINGTON —The first humans to live on Mars might not identify as astronauts, but farmers. To establish a sustainable settlement on Earth’s solar system neighbor, space travelers will have to learn how to grow food on Mars — a job that could turn out to be one of the most vital, challenging and labor-intensive tasks at hand, experts say.

“One of the things that every gardener on the planet will know is producing food is hard — it is a non-trivial thing,” Penelope Boston, director of the Cave and Karst Studies program at New Mexico Institute of Mining and Technology, said yesterday (May 7) at the Humans 2 Mars Summit here at George Washington University. “Up until several hundred years ago it occupied most of us for most of the time.”

Early Mars colonists may have to revert to this mode of life to ensure their own survival, she suggested. [Cooking Lessons for Mock Mars Mission (Photos)]

Space settlers

NASA is actively engaged in researching how to farm on Mars and in space, as the agency is targeting its first manned Mars landing in the mid-2030s. And some NASA officials are wondering if that mission ought to be of long duration, rather than a short visit, given the difficulty of getting there and the possible benefits of an extended stay. “Sustained human presence — should that be our goal? I think that’s a good discussion,” Bill Gerstenmaier, associate administrator of NASA’s Human Exploration and Operations Mission Directorate, said here Monday (May 6).

Food container for use aboard the International Space Station. Food not only provides nutrition for astronauts, but also enhances the psychological well-being of the crew by establishing a familiar element in an unfamiliar and hostile environment. This image was released Feb. 20, 2013.
Food container for use aboard the International Space Station. Food not only provides nutrition for astronauts, but also enhances the psychological well-being of the crew by establishing a familiar element in an unfamiliar and hostile environment. This image was released Feb. 20, 2013.

Credit: NASA

Yet growing food on Mars presents several significant challenges. While research on the International Space Station suggests plants can grow in microgravity, scientists don’t know how the reduced gravity on Mars might affect different Earth crops. Mars’ surface receives about half the sunlight Earth does, and any pressurized greenhouse enclosure will further block the light reaching plants, so supplemental light will be needed. Supplying that light requires a significant amount of power.

“In terms of the systems engineering required, it’s not an insignificant challenge,” said D. Marshall Porterfield, Life and Physical Sciences division director at NASA’s Human Exploration and Operations Mission Directorate. NASA has been studying using LED lighting to give plants only the wavelengths of light they need to boost efficiency, he said.

Researchers are also studying whether plants can survive under lower pressures than on Earth, because the more pressure inside a greenhouse, the more massive that greenhouse must be to contain it.

“You don’t have to inflate that greenhouse to Earth-normal pressure in order for plants to grow,” said Robert Ferl, director of the Interdisciplinary Center for Biotechnology Research at the University of Florida. “Maintaining a full atmosphere of pressure is difficult on a planetary surface. You can take plants down to a tenth of an atmosphere and they’ll still function.”

However, then, the greenhouse must be sealed off from the crew’s living quarters.

“Gardening in a pressure suit is going to be a real trick,” said Taber MacCallum, chief executive officer of Paragon Space Development Corp.

 

________________________________________________________________________________________

Barboza Space Center Student

Questions:
1.  What is your plan for growing food on Mars?
2.  What will you try to grow?
3.  How will you organize your observations notes?
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: