BlogArena

General blog about anything and everything of everyday's life.

25. May 2019

December 7, 2014
by Guest Post
0 comments

Extinctions during human era worse than thought

The gravity of the world’s current extinction rate becomes clearer upon knowing what it was before people came along. A new estimate finds that species die off as much as 1,000 times more frequently nowadays than they used to. That’s … Continue reading

August 23, 2014
by Guest Post
0 comments

NASA’s NuSTAR Sees Rare Blurring of Black Hole Light

NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) has captured an extreme and rare event in the regions immediately surrounding a supermassive black hole. A compact source of X-rays that sits near the black hole, called the corona, has moved closer to … Continue reading

June 11, 2014
by Guest Post
0 comments

Nearest Bright ‘Hypervelocity Star’ Found

Speeding at 1 Million mph, It Probes Black Hole and Dark Matter A University of Utah-led team discovered a “hypervelocity star” that is the closest, second-brightest and among the largest of 20 found so far. Speeding at more than 1 … Continue reading

May 1, 2014
by Guest Post
0 comments

Solar System’s Edge Redefined

Washington, D.C.—The Solar System has a new most-distant member, bringing its outer frontier into focus. New work from Carnegie’s Scott Sheppard and Chadwick Trujillo of the Gemini Observatory reports the discovery of a distant dwarf planet, called 2012 VP113, which … Continue reading

January 8, 2014
by Guest Post
0 comments

Stormy Stars? NASA’s Spitzer Probes Weather on Brown Dwarfs

Swirling, stormy clouds may be ever-present on cool celestial orbs called brown dwarfs. New observations from NASA’s Spitzer Space Telescope suggest that most brown dwarfs are roiling with one or more planet-size storms akin to Jupiter’s “Great Red Spot.” “As … Continue reading

August 30, 2013
by Guest Post
0 comments

Saturn Moon May Have Rigid Ice Shell

An analysis of gravity and topography data from the Saturnian moon Titan obtained by NASA’s Cassini spacecraft suggests there could be something unexpected about the moon’s outer ice shell. The findings, published on Aug. 28 in the journal Nature, suggest … Continue reading

August 1, 2013
by Guest Post
0 comments

Water Geysers on Saturn’s Moon

A new study published in Nature this week describes the forces that control the jets of water and organic material that erupt from the icy surface of Enceladus, a moon of Saturn. UA scientists contributed data to the study. The … Continue reading

July 28, 2013
by Guest Post
0 comments

NASA’s WISE Finds Mysterious Centaurs May Be Comets

PASADENA, Calf. — 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 observations from NASA’s Wide-field … Continue reading