Astronauts may play role in Mars missions

2012-09-26 18:17
Mars. (Picture: Nasa, AP)

Mars. (Picture: Nasa, AP)

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Washington - Nasa's future plans to explore Mars may end up using astronauts as space messengers.

The new idea surfaced as a special team looking for a new Mars robotic exploration plan released a preliminary report on Tuesday.

One of the option calls for a Martian robotic rover to collect rocks on the red planet. Later, astronauts in a newly built spaceship would be used to pick them up from a cosmic delivery point somewhere between Earth and Mars and return them home.

The report gives the space agency several options with no specific timing for future missions and no decision is expected until next year. The new plan is needed because budget cuts earlier this year killed two future robotic flights.

The space agency has so far explored Mars with orbiters and robots, like the rover Curiosity that landed last month. The ultimate goal has been to get a robot to collect rocks and Martian soil to send to Earth for more detailed scientific examination.

Separately, Nasa is working on new missions for astronauts to explore away from Earth, with a goal of sending them to Mars sometime in the 2030s.

Between planets


The Nasa team proposed combining both dreams, getting astronauts involved in Martian exploration earlier. But they wouldn't exactly go to Mars itself. The astronauts would go somewhere between Mars and Earth and pick up the rocks left by a spacecraft that carried them off Mars.

That plan takes advantage of the new rocket and spaceship system for astronauts that should be ready in the next decade, said Nasa associate administrator for sciences John Grunsfeld.

It also would lessen contamination worries about the Martian rocks. Scientists want to make sure that the Martian samples could not bring alien germs to Earth and that Earth organisms don't contaminate the Martian sample, Grunsfeld said.

And it would help the mission to land humans on Mars because it "looks a lot like sending a crew to Mars and returning them safely", Grunsfeld said.

The planning team looked at a few options for a Mars sample return mission.

Nasa still has to decide what robotic or orbiter mission it wants to send to Mars in 2018, if any. It's a time when Earth and the red planet will be close and save money on fuel costs. Grunsfeld said Nasa only has about $800m budgeted for that, which is not enough for a major rover.

- AP
Read more on:    nasa  |  space
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