ScienceDaily: Astronomy News |
- Companion planets can increase old worlds' chance at life
- Rosetta's comet: Imaging the coma
- NASA announces Mars 2020 rover payload to explore the Red Planet as never before
| Companion planets can increase old worlds' chance at life Posted: 01 Aug 2014 06:12 AM PDT Having a companion in old age is good for people -- and, it turns out, might extend the chance for life on certain Earth-sized planets in the cosmos as well. Planets cool as they age. Over time their molten cores solidify and inner heat-generating activity dwindles, becoming less able to keep the world habitable by regulating carbon dioxide to prevent runaway heating or cooling. |
| Rosetta's comet: Imaging the coma Posted: 01 Aug 2014 05:44 AM PDT Less than a week before Rosetta's rendezvous with comet 67P/Churyumov-Gerasimenko, images obtained by OSIRIS, the spacecraft's onboard scientific imaging system, show clear signs of a coma surrounding the comet's nucleus. A new image from July 25, 2014, clearly reveals an extended coma shrouding 67P's nucleus. |
| NASA announces Mars 2020 rover payload to explore the Red Planet as never before Posted: 01 Aug 2014 05:41 AM PDT The next rover NASA will send to Mars in 2020 will carry seven carefully-selected instruments to conduct unprecedented science and exploration technology investigations on the Red Planet. |
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