jul 152013
 
Herschel Discovers Cosmic Dust Belts without Dust

  International Research Team of Astrophysicists Discovers Six Ultra-Cold Debris Disks   Planets and asteroids, red giants and brown dwarfs – there are all kinds of objects in our Universe. Debris disks are among them. These are belts consisting of countless dust particles and planetesimals, circling around one central star. “At least one fifth of [continue reading]

jul 022013
 
Evidence for Exoplanet Under Construction Uncovered

  This news item was released during my holiday. You probably heard of it, but in the case you didn’t, here it is.   Astronomers using NASA’s Hubble Space Telescope have found compelling evidence of a planet forming 7.5 billion miles away from its star, a finding that may challenge current theories about planet formation. [continue reading]

jun 282013
 
Gas-Giant Exoplanets Cling Close to Their Parent Star

  Gemini Observatory’s Planet-Finding Campaign finds that, around many types of stars, distant gas-giant planets are rare and prefer to cling close to their parent stars. The impact on theories of planet formation could be significant. Artist’s rendering of a possible exoplanetary system with a gas-giant planet orbiting close to his parent star which is [continue reading]

mei 112013
 
Where on Earth Did the Moon’s Water Come From?

  Water is perhaps the most important molecule in our Solar System. Figuring out where it came from and how it was distributed within and among the planets can help scientists understand how planets formed and evolved. New research from a team including Carnegie’s Erik Hauri demonstrates that water from the interiors of the Earth [continue reading]

mei 092013
 
White Dwarfs "polluted" with Planetary Debris

  The NASA/ESA Hubble Space Telescope has found signs of Earth-like planets in an unlikely place: the atmospheres of a pair of burnt-out stars in a nearby star cluster. The white dwarf stars are being polluted by debris from asteroid-like objects falling onto them. This discovery suggests that rocky planet formation is common in clusters, [continue reading]

apr 282013
 
Mysterious hot spots observed in Betelgeuse

  Astronomers have released a new image of the outer atmosphere of Betelgeuse – one of the nearest red supergiants to Earth – revealing the detailed structure of the matter being thrown off the star. The e-MERLIN image of Betelgeuse. Image Credit: University of Manchester The new image, taken by the e-MERLIN radio telescope array operated [continue reading]