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Astronomers Discovery a Graveyard for Comets
Astronomers have discovered
a graveyard of comets. The
researchers describe how
some of these objects,
inactive for millions of
years, have returned to life
leading them to name the
... > full story
Planetary 'Runaway Greenhouse' More Easily Triggered, Research Shows
It might be easier than
previously thought for a
planet to overheat into the
scorchingly uninhabitable
"runaway greenhouse" stage,
... > full story
NASA's Chandra Sees Eclipsing Planet in X-Rays for First Time
For the first time since
exoplanets, or planets
around stars other than the
sun, were discovered almost
20 years ago, X-ray
observations have detected
... > full story
Pulsating Star Sheds Light on Exoplanet
Astronomers have devised a
way to measure the internal
properties of stars —-
a method that offers more
accurate assessments of
their orbiting planets. ... > full story
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Centaurs: NASA's WISE Finds Mysterious Centaurs May Be Comets
July 25, 2013 — The true identity of centaurs, the small celestial bodies orbiting the sun between Jupiter and Neptune, is one of the enduring mysteries of astrophysics. Are they asteroids or comets? A new study of ... > full story -
NASA's IRIS Telescope Offers First Glimpse of Sun's Mysterious Atmosphere
July 25, 2013 — The moment when a telescope first opens its doors represents the culmination of years of work and planning -- while simultaneously laying the groundwork for a wealth of research and answers yet to ... > full story -
Image of Sun-Approaching Comet ISON
July 25, 2013 — In this Hubble composite image taken in April 2013, the sun-approaching Comet ISON floats against a seemingly infinite backdrop of numerous galaxies and a handful of foreground ... > full story -
NASA's Van Allen Probes Discover Particle Accelerator in the Heart of Earth’s Radiation Belts
July 25, 2013 — Scientists have discovered a massive particle accelerator in the heart of one of the harshest regions of near-Earth space, a region of super-energetic, charged particles surrounding the globe called ... > full story -
Solar System's Youth Gives Clues to Planet Search
July 24, 2013 — Comets and meteorites contain clues to our solar system's earliest days. But some of the findings are puzzle pieces that don't seem to fit well together. A new set of theoretical models shows how an ... > full story -
NASA's Spitzer Observes Gas Emission from Comet ISON
July 23, 2013 — Astronomers using NASA's Spitzer Space Telescope have observed what most likely are strong carbon dioxide emissions from Comet ISON ahead of its anticipated pass through the inner solar system later ... > full story -
NASA Releases Images of Earth by Two Interplanetary Spacecraft
July 22, 2013 — Color and black-and-white images of Earth taken by two NASA interplanetary spacecraft on July 19 show our planet and its moon as bright beacons from millions of miles away in space. NASA's Cassini ... > full story -
Large Coronal Hole Near the Sun's North Pole
July 19, 2013 — Astronomers captured an image of a gigantic coronal hole hovering over the sun's north pole on July 18, 2013, at 9:06 a.m. EDT. Coronal holes are dark, low density regions of the sun's outermost ... > full story -
Snow in an Infant Solar System: A Frosty Landmark for Planet and Comet Formation
July 18, 2013 — A snow line has been imaged in a far-off infant solar system for the very first time. The snow line, located in the disc around the Sun-like star TW Hydrae, promises to tell us more about the ... > full story -
MAVEN Spectrometer Opens Window to Red Planet’s Past
July 18, 2013 — When NASA's MAVEN mission begins its journey to the Red Planet later this year, it will be equipped with a special instrument to take the planet back in ... > full story
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