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We summarize the week's scientific breakthroughs every Thursday.
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		AstronomyAll-sky survey makes Internet debut
An atlas of some 5 million images from the Two Micron All-Sky Survey is now available online.
By Ron Cowen - 			
			
		AstronomyEvidence grows for nearby planetary system
Astronomers have found the nearest known planet that lies outside the solar system, a mere 10.5 light-years from Earth.
By Ron Cowen - 			
			
		AstronomyCosmic Blowout: Black holes spew as much as they consume
Supermassive black holes at the cores of galaxies can blow out as much material as they swallow, creating high-speed winds that may seed the universe with oxygen, carbon, iron, and other elements essential for life.
By Ron Cowen - 			
			
		Planetary ScienceSpacecraft reveal Mars’ molten heart
Tracking the precise motion of a spacecraft orbiting Mars, planetary scientists have deduced that the core of the Red Planet is at least partially liquid.
By Ron Cowen - 			
			
		AstronomyBy the light of a starry eruption
Astronomers calculating the brightness of a supernova explosion witnessed in the 11th century estimate that it was likely the most brilliant stellar event in recorded history.
By Ron Cowen - 			
			
		Planetary ScienceRed Planet
The imaging team of NASA’s Mars Global Surveyor spacecraft has doubled the number of Mars pictures available to the public with the release of a new archive of photos. The archive contains all the pictures that were taken by Mars Global Surveyor from September 1999 through February 2000 and includes the images that were taken […]
By Science News - 			
			
		AstronomyX-ray flare from a dim source
An X-ray flare coming from a old, failed star has surprised astronomers.
By Ron Cowen - 			
			
		AstronomyA comet’s chilly origin
Astronomers have detected argon in comet Hale-Bopp, the first time an inert gas has been found in one of these icy bodies and an indication that the comet formed in the frigid outer solar system between the orbits of Uranus and Neptune.
By Ron Cowen - 			
			
		AstronomyTelescope finds tiny moon of Jupiter
Astronomers reported the discovery of Jupiter's 17th known moon, the first Jovian moon discovered in 25 years and perhaps the tiniest known satellite of any planet.
By Ron Cowen - 			
			
		AstronomyHonors for Science News astronomy writer
Science News astronomy writer Ron Cowen is a recipient of the third David N. Schramm award for distinguished writing on high-energy astrophysics.
By Science News - 			
			
		AstronomyCosmic Afterglow: Gamma-ray bursts may one-up themselves
New observations suggest that gamma-ray bursts may be even more energetic than scientists had estimated.
By Ron Cowen - 			
			
		AstronomyPlanet’s Slim-Fast Plan: Extrasolar orb is too close for comfort
A new study of the atmosphere of a planet outside the solar system suggests that some orbs will vaporize if they orbit too close to their parent star.
By Ron Cowen