Science Results Archive
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| XMM-Newton Announcement of Opportunity (AO9) |
Proposals are solicited for observations with XMM-Newton in response to the Ninth Announcement of Opportunity, AO-9, issued 25 August 2009. This AO covers the period May 2010 to April 2011 and is open to all proposers.
The deadline for receipt of proposals for this AO has passed.
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| Date: 27 Aug 2009 |
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| Celebrate the Apollo 11 landing and win a signed copy of Tintin |
| During this International Year of Astronomy the world celebrates the 40th anniversary of the Apollo 11 Moon landing. To mark this historic mission ESA is running a special competition in collaboration with Moulinsart, to give away copies of Tintin's Moon cartoons, signed by an ESA astronaut. Send the correct answer to a simple Moon-related question to be in with a chance of winning. |
| Date: 10 Aug 2009 |
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| Reconciling methane variations on Mars |
| Since the discovery of its presence in the Martian atmosphere, methane has remained an intriguing atmospheric component which source (either of biotic or abiotic origin) is not yet fully understood. The recently reported variations in the concentration of atmospheric methane have proven difficult to explain with 3-D numerical models of the atmosphere that include the known chemical and physical processes. In a paper published this week in Nature, Franck Lefèvre and François Forget present their study to derive the implications of the observed methane concentrations on Mars and their variability. They conclude that there needs to be both an intense localised source of methane and a destruction mechanism that is much more efficient than the known atmospheric processes that break down methane. Further, if this efficient destruction of methane occurs only close to the surface, these findings imply a very harsh environment for organic molecules to survive on the surface of Mars. |
| Date: 06 Aug 2009 |
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