ScienceDaily: Astronomy News |
- Fireballs in Jupiter's atmosphere observed by amateur astronomers
- Balloon-borne astronomy experiment X-Calibur racing to hit wind window
- Get ready for Rosetta's wake-up call with activity schedule for target comet
- Changes in Saturn's Moon Titan’s surface brightness point to cryovolcanism
| Fireballs in Jupiter's atmosphere observed by amateur astronomers Posted: 13 Sep 2013 04:50 PM PDT The solar system is crowded with small objects like asteroids and comets. Most have stable orbits which keep them out of harm's way, but a small proportion of them are in orbits that risk them colliding with planets. |
| Balloon-borne astronomy experiment X-Calibur racing to hit wind window Posted: 13 Sep 2013 03:58 PM PDT In a few days, a balloon-borne telescope sensitive to the polarization of high-energy "hard" X-rays will ascend to the edge of the atmosphere above Fort Sumner, N.M. Once aloft, the telescope will stare at black holes, neutron stars and other exotic astronomical objects that shine brightly in the X-ray part of the spectrum in order to learn about their nature and structure. After years of preparation, the X-Calibur team is racing to get the experiment mission-ready in time for the stratospheric wind event they hope to ride. |
| Get ready for Rosetta's wake-up call with activity schedule for target comet Posted: 13 Sep 2013 09:41 AM PDT After a journey of almost ten years, the Rosetta mission has just a few months left to wait before beginning its rendezvous with a time capsule. Comet 67P/Churymov-Gerasimenko is a dirty snowball of ice and dust that preserves material from the formation of the Solar System 4.5 billion years ago. |
| Changes in Saturn's Moon Titan’s surface brightness point to cryovolcanism Posted: 13 Sep 2013 09:41 AM PDT Changes in surface brightness on Titan observed over four years by NASA's Cassini spacecraft have added to evidence that cryovolcanism is active on Saturn's largest Moon. Astronomers compared many volcanic-like features, such as flows, calderas and craters, with similar geological features found on Earth to study the possibility of cryovolcanic activity within regions observed close to Titan's equator. |
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