spacetoday.net: space news from around the webin association with SpaceNews


Curiosity provides evidence of loss of early Martian atmosphere
Posted: Tue, Jul 23, 2013, 6:53 AM ET (1053 GMT)
MSL self-portrait, November 2012 (NASA/JPL) Data collected by NASA's Mars rover Curiosity have provided scientists with new evidence that Mars once had a thicker atmosphere that it lost relatively early in its history. A pair of papers published in the latest issue of the journal Science last week analyze ratios of carbon and oxygen isotopes in the carbon dioxide in the current Martian atmosphere. Heavier isotopes are present in the atmosphere in greater proportions than in the sun and elsewhere in the solar systems, suggesting that more lighter isotopes escaped. The results confirm previous studies that suggested the planet once had a thicker atmosphere, one that could support liquid water on the planet's surface, but that atmosphere was lost to space within the planet's first billion years.
<<previous article   next article>>
news in brief
Soyuz launches OneWeb satellites
Posted: Sat, Oct 16 6:09 PM ET (2209 GMT)


JWST arrives in French Guiana
Posted: Sat, Oct 16 5:56 PM ET (2156 GMT)

news links
Friday, October 22
Editorial: NASA launches deep into space
San Antonio Express-News — 3:24 am ET (0724 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list