Wednesday, May 2, 2007
Probing for answers in outer space
University of Arkansas researchers, in partnership with a local company, will develop a probe for future planetary rovers that will help scientists study materials on other planetary bodies. The probe will help explain the history of the solar system by examining the properties of layers of material beneath the surface of the moon, Mars, comets and other planetary bodies.
Which Glove?
Six NASA teams assemble to see which one of their space gloves is a better creation. The Astronaut Glove Challenge is a two day competition beginning today (May 2).
""We're looking for something different, to show us something unique," said Alan Hayes, CEO of the non-profit Owings, Maryland firm Volanz Aerospace, which is overseeing the Astronaut Glove Challenge for NASA. "
""We're looking for something different, to show us something unique," said Alan Hayes, CEO of the non-profit Owings, Maryland firm Volanz Aerospace, which is overseeing the Astronaut Glove Challenge for NASA. "
NASA Ponders Death & Sex On Mars Mission
When should the plug be pulled on a critically ill astronaut who is using up precious oxygen and endangering the rest of the crew? Should NASA employ DNA testing to weed out astronauts who might get a disease on a long flight?
With NASA planning to land on Mars 30 years from now, and with the recent discovery of the most "Earth-like" planet ever seen outside the solar system, the space agency has begun to ponder some of the thorny practical and ethical questions posed by deep space exploration.
With NASA planning to land on Mars 30 years from now, and with the recent discovery of the most "Earth-like" planet ever seen outside the solar system, the space agency has begun to ponder some of the thorny practical and ethical questions posed by deep space exploration.
Tuesday, May 1, 2007
Gone With the Martian Wind
http://www.space.com/searchforlife/seti_mars_wind_070426.html
The harsh Martian winds are causing the oxidized martian soil to be blown away revealing darker, sub-surface soil which will result in a increase in temperature across the entire planet. As a result of this heating effect Mars is experiencing its own brand of climate change which is not related the Earth's global warming phase but it can shed light on how planets evolve and change over time. The mechanism for the warming is due to the change in albedo of the martian surface. The light, bright, oxidized martian surface soil reflects a significant amount of solar radiation which maintains Mars' cool temperature. The darker, more absorbent subsurface soil, revealed after a windstorm or dust devil passes through on Mars, retains more heat, just as wearing dark clothes will on that same hot summer's day here on earth. The result of more exposed dark soil is that the temperature of Mars has gone up between one and two degrees over the last two decades.
The harsh Martian winds are causing the oxidized martian soil to be blown away revealing darker, sub-surface soil which will result in a increase in temperature across the entire planet. As a result of this heating effect Mars is experiencing its own brand of climate change which is not related the Earth's global warming phase but it can shed light on how planets evolve and change over time. The mechanism for the warming is due to the change in albedo of the martian surface. The light, bright, oxidized martian surface soil reflects a significant amount of solar radiation which maintains Mars' cool temperature. The darker, more absorbent subsurface soil, revealed after a windstorm or dust devil passes through on Mars, retains more heat, just as wearing dark clothes will on that same hot summer's day here on earth. The result of more exposed dark soil is that the temperature of Mars has gone up between one and two degrees over the last two decades.
Rocket ship
Every eleven years or so our good neighbor the Sun becomes more restless. Sunspots are the most visible aspect of this, sometimes so large and numerous that they can be seen with the naked eye (not that you’re supposed to do that, of course). But this more active period is also accompanied by massive solar flares and coronal mass ejections—great geysers of starstuff packing enough energy to boil an ocean, spewed out across our solar system and occasionally at Earth, where it mucks up radios, jams electrons into electrical cables so that transformers burn out, and sometimes fries satellites, or at least addles their fragile electronic brains.
Gone With the Martian Wind
Gone With the Martian Wind
Mars is a very windy place--so windy, in fact, that bright, oxidized martian soil is being scoured away by martian winds and dust devils to reveal darker, sub-surface soil with the end result of making the whole planet warmer. Mars is experiencing its own brand of climate change. Is this related to planet earth's greenhouse gas driven climate change? No. Is understanding the process important for our understanding of how planets evolve and change over time? Absolutely.
Mars is a very windy place--so windy, in fact, that bright, oxidized martian soil is being scoured away by martian winds and dust devils to reveal darker, sub-surface soil with the end result of making the whole planet warmer. Mars is experiencing its own brand of climate change. Is this related to planet earth's greenhouse gas driven climate change? No. Is understanding the process important for our understanding of how planets evolve and change over time? Absolutely.
Computer Coding Error Led to Loss of Mars Space Probe
Command system upgrade sent performance settings to the wrong areas of memory
Computer coding errors apparently caused the loss of the Mars Global Surveyor spacecraft last year, the NASA space agency has revealed. The spacecraft, launched in November 1996, began its orbit of Mars the following September as part of a nearly 10-year scientific survey. It mapped the surface and atmosphere of Mars, provided extensive images of the planet and even assisted in locating a landing spot for other spacecraft.
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