nov 202012
 
'Super-Jupiter' Around Massive Star Directly Imaged

  Astronomers using infrared data from the Subaru Telescope in Hawaii have discovered a “super-Jupiter” around the bright star Kappa Andromedae, which now holds the record for the most massive star known to host a directly imaged planet or lightweight brown dwarf companion. The “super-Jupiter” Kappa Andromedae b, shown here in an artist’s rendering, circles [continue reading]

nov 142012
 
Exoplanet Lost in Space...

  Orphaned world may help to explain how planets and stars form   Astronomers using ESO’s Very Large Telescope and the Canada-France-Hawaii Telescope have identified a body that is very probably a planet wandering through space without a parent star. This is the most exciting free-floating planet candidate so far and the closest such object [continue reading]

jun 142012
 
Two Odd Planets Discovered by “Extremely Little” Telescope

  Even small telescopes can make big discoveries   Though the KELT North telescope in southern Arizona carries a lens no more powerful than a high-end digital camera, it’s just revealed the existence of two very unusual faraway planets. This artist’s rendering shows planet KELT-1b, which resides so close to its star that it completes [continue reading]

jun 092012
 
Just a  Few Brown Dwarfs Close to Home

  Astronomers are getting to know the neighbors better. Our sun resides within a spiral arm of our Milky Way galaxy known as the Orion Arm, about two-thirds of the way out from the center. It lives in a fairly calm, suburb-like area with an average number of stellar residents. Recently, NASA’s Wide-field Infrared Survey Explorer (WISE), has [continue reading]

mei 102012
 
Ultra-Cool Brown Dwarf Helps Reveal Giant Planets

  An international team of astronomers led by David Pinfield of the University of Hertfordshire has found a brown dwarf that is more than 99% hydrogen and helium. Described as ultra-cool, it has a temperature of just 400 degrees Celsius and its discovery could be a key step forward in helping astronomers distinguish between brown [continue reading]

mei 012012
 
Rogue stars ejected from the galaxy found in intergalactic space

  It’s very difficult to kick a star out of the galaxy. In fact, the primary mechanism that astronomers have come up with that can give a star the two-million-plus mile-per-hour kick it takes requires a close encounter with the supermassive black hole at the galaxy’s core. Rogue star is ejected from the galaxy by [continue reading]