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Planet Mars

Vision risks for astronauts could be a Mars mission 'showstopper,' NASA scientist says

Mars may possess a stark and austere beauty, but a manned Red Planet mission will likely not be easy on the eyes.Recently, scientists have begun realizing that spaceflight can cause serious and perhaps permanent vision problems in astronauts . NASA researchers are working hard to understand the issue, which could present a major hurdle to mounting manned missions to Mars and other faraway destinations."This is one that we don't yet have a good handle on, and it can be a showstopper," Mark Shelhamer, chief scientist for the NASA Human Research Program at Johnson Space Center in Houston, said last week during a presentation with the agency's Future In-Space Operations (FISO) working group. [ The Human Body in Space: 6 Weird Facts ]Another peril of microgravityThe human body suffers in the microgravity environment of space. For example, without effective countermeasures — i.e., vigorous weight-bearing exercise — astronauts' muscles atrophy and their bones shed calcium, becoming more and m...

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  1. New NASA Mars Rover is a Red Planet Mini-Truck, Ford Says

    NASA's newest Mars rover is just days away from landing on the Red Planet, and space agency officials have long compared the six-wheeled robot's size to that of a Mi...

  2. Upcoming Mars Rover Landing Follows 40-Year Tradition of High Drama

    When NASA's Curiosity rover attempts to land on Mars next month, it will join a long list of missions that have sought to touch the Red Planet, a legacy that dates b...

  3. Amazing Mars Rover Shifting Into Science Gear After 1st Martian Month

    NASA's Mars rover Curiosity has wrapped up its first full month on the Red Planet and is gearing up its robotic arm to reach out and touch Martian rocks for the firs...

  4. Will NASA's huge new rover contaminate Mars ?

    An unexpected contamination problem has cropped up for NASA's next Mars rover, but scientists are confident the huge robot will still be able to complete its mission...

  5. Despite Risk, Experts Bet on New Mars Rover's Audacious Landing Plan

    Many have been fretting about the seemingly implausible, risky landing strategy of the new Mars rover Curiosity set to arrive on the Red Planet next month, but engin...

  6. NASA Preps Advanced New Mars Rover For November Launch

    NASA's next Mars rover, the car-size Mars Science Laboratory, or Curiosity, is almost ready to fly to the Red Planet.Beginning tomorrow (Aug. 13), technicians at the...

  7. Mars makes closest approach to Earth in 6 years monday ahead of lunar cclipse

    A huge night for stargazers is nearly here: On Monday evening, Mars will make its closest approach to Earth in six years, just ahead of a total eclipse of the moon.M...

  8. Mars Rover Curiosity Celebrates 1st Birthday Off Earth

    NASA's Mars rover Curiosity marked one year away from Earth Monday (Nov. 26), but the car-size robot's work on the Red Planet is just getting started.Curiosity launc...

  9. NASA to unveil Mars rover Curiosity findings Monday

    NASA will discuss the latest Red Planet activities of its Mars rover Curiosity on Monday, Dec. 3, but space geeks shouldn't get their hopes up for a bombshell announ...

  10. Mars Rover begins mountain climbing

    NASA's Opportunity Mars rover has started scaling the tallest hill it has yet encountered in its nearly 10 years of Red Planet exploration.Opportunity is working its...

  11. Huge Mars Rover One Month from Red Planet Landing

    The biggest rover ever launched to another planet is just one month away from its target: the Red Planet, Mars.NASA's huge Curiosity rover is hurtling toward a plann...

  12. Mars Rovers See Water-Linked Material

    The Mars rover Spirit ( search ) found a mineral linked to water during its exploration of the Red Planet, NASA's Jet Propulsion Laboratory ( search ) said Monday.Sc...

  1. Mars rover Curiosity has 'dreams' on Red Planet

    If androids dream of electric sheep, what do Mars rovers dream about? Their fiery descents through the Red Planet's atmosphere? Or maybe their Earthly home, so many ...

  2. NASA Curiosity rover captures mysterious bright light on Mars

    A NASA picture of a mysterious bright light on Mars has sparked the interest of UFO believers and non alike."This could indicate there is intelligent life below the ...

  3. Huge Mars Rover's Landing Will Be '7 Minutes of Terror'

    In just six weeks, NASA's next Mars rover will attempt an unprecedented landing on the Red Planet that will have mission engineers on the edge of their seats with ex...

  4. Mars Rover Curiosity Leaves Coded Tracks on First Test Drive

    NASA's Mars rover Curiosity has left its first tracks in the Martian soil, imprinting the coded mark of its maker in its trail.On Wednesday (Aug. 22), the car-size, ...

  5. Mars rover sends amazing photos, 1st human voice from red planet

    NASA's Mars rover Curiosity has beamed home the first human voice ever sent from another planet, as well as some spectacular new images of its Martian environs.The 1...

  6. Mars Rover Curiosity Has 'Dreams' on Red Planet

    If androids dream of electric sheep, what do Mars rovers dream about? Their fiery descents through the Red Planet's atmosphere? Or maybe their Earthly home, so many ...

  7. Mars rover Curiosity to take 1st Martian drive Wednesday

    After more than two weeks of sitting still, NASA's Mars rover Curiosity is finally set to roll out on the Red Planet with its debut drive on Wednesday.Engineers succ...

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