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Posts Tagged ‘galaxy’

Kepler Spots a Doomed Planet Slowly Evaporating into Space


By Clay Dillow Posted 05.21.2012 at 12:51 pm @ http://www.popsci.com/

Of all the ways planets can die–consumed by their host stars, for instance, or obliterated by a collision with another planet or asteroid–evaporation isn’t one that had crossed many astronomer’s minds. But data from the exoplanet-hunting Kepler observatory has revealed a nearby planet–just 1,500 light years from Earth–that appears to be evaporating before our very eyes. Over the next 100 million years, the planet will completely disintegrate.

NASA’s Spitzer Sees the Light of Alien ‘Super-Earth’


NASA’s Spitzer Space Telescope was able to detect a super Earth’s direct light for the first time using its sensitive heat-seeking infrared vision. Super Earth’s are more massive than Earth but lighter than gas giants like Neptune. As this artist’s concept shows, in visible light, a planet is lost in the glare of its star (top view). When viewed in infrared, the planet becomes brighter relative to its star. This is largely due to the fact that the planet’s scorching heat blazes with infrared light. Even on our own bodies emanate more infrared light than visible due to our heat. (Credit: NASA/JPL-Caltech)

 

ScienceDaily (May 8, 2012) — NASA’s Spitzer Space Telescope has detected light emanating from a “super-Earth” planet beyond our solar system for the first time. While the planet is not habitable, the detection is a historic step toward the eventual search for signs of life on other planets.

Spitzer has amazed us yet again,” said Bill Danchi, Spitzer program scientist at NASA Headquarters in Washington. “The spacecraft is pioneering the study of atmospheres of distant planets and paving the way for NASA’s upcoming James Webb Space Telescope to apply a similar technique on potentially habitable planets.”

The planet, called 55 Cancri e, falls into a class of planets termed super Earths, which are more massive than our home world but lighter than giant planets like Neptune. The planet is about twice as big and eight times as massive as Earth. It orbits a bright star, called 55 Cancri, in a mere 18 hours.

Read more : http://www.sciencedaily.com/releases/2012/05/120508174416.htm

Omnivorous Black Holes Like This One Are Pretty Much the Sharks of Space


By Dan Nosowitz Posted 05.03.2012 at 12:57 pm

Scientists from the Harvard-Smithsonian Center for Astrophysics and Johns Hopkins University report seeing a phenomenon we’ve all imagined: a black hole devouring a star.

A black hole at the center of a galaxy about 2.7 billion light-years away, one about the same size as the black hole at the center of our own Milky Way, was observed sucking the life out of a star.