NASA Images Suggest Water Still Flows on Mars |
NASA Images Suggest Water Still Flows on Mars |
Guest_Sunspot_* |
Dec 4 2006, 09:25 PM
Post
#101
|
Guests |
Dec. 4, 2006
Dwayne Brown/Erica Hupp Headquarters, Washington 202-358-1726/1237 Guy Webster Jet Propulsion Laboratory, Pasadena, Calif. 818-354-6278 MEDIA ADVISORY: M06-186 NASA SCHEDULES BRIEFING TO ANNOUNCE SIGNIFICANT FIND ON MARS WASHINGTON - NASA hosts a news briefing at 1 p.m. EST, Wednesday, Dec. 6, to present new science results from the Mars Global Surveyor. The briefing will take place in the NASA Headquarters auditorium located at 300 E Street, S.W. in Washington and carried live on NASA Television and www.nasa.gov. The agency last week announced the spacecraft's mission may be at its end. Mars Global Surveyor has served the longest and been the most productive of any spacecraft ever sent to the red planet. Data gathered from the mission will continue to be analyzed by scientists. Panelists include: - Michael Meyer -- Lead Scientist, Mars Exploration Program, NASA Headquarters, Washington - Michael Malin -- President and Chief Scientist, Malin Space Science Systems, San Diego, Calif. - Kenneth Edgett -- Scientist, Malin Space Science Systems - Philip Christensen -- Professor, Arizona State University, Tempe, Ariz. |
|
|
Aug 30 2007, 01:36 PM
Post
#102
|
|
Member Group: Members Posts: 401 Joined: 5-January 07 From: Manchester England Member No.: 1563 |
Sorry to resurrect a long dormant thread but it seems like the best place to ask this question: In the planetary society blog Doug reported on a hypothesis that bacteria on mars could survive by using an intracellular fluid of water mixed with hydrogen peroxide. As an idea this makes some sense as at atmospheric pressure at least (I've not been able to locate a temperature-pressure curve for H2O2) a 60%-40% H2O2-H2O mix has a boiling point of 120 deg C and a freezing point of -50 degC. In other words its stable over nearly twice the temperature range of water. So (finally gets to the point) has it been considered anywhere that the liquid flowing down the gullies could be bleach? Google hasn't thrown up anything on the idea, although it has been convincingly argued that H2O2 could be produced in the martian atmosphere during storms and be coating the surface.
-------------------- |
|
|
Aug 30 2007, 02:08 PM
Post
#103
|
|
Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
a 60%-40% H2O2-H2O mix has a boiling point of 120 deg C and a freezing point of -50 degC. And at 6 mbar? That's the crucial point. You can mix all sorts of things with water to change the boiling point and freezing point - H2O2 is one of the more unpleasent ways of doing it - particularly on the UV soaked surface of Mars. Doug |
|
|
Lo-Fi Version | Time is now: 26th September 2024 - 04:23 PM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |