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Image of sun shows two areas of sunspots, one arriving and one leaving
NASA has released an image of the sun showing two sunspots - one "coming" and one "going" - both the size of Jupiter, astronomers say. ... more
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Search for habitable planets should be more conservative
Scientists should take the conservative approach when searching for habitable zones where life-sustaining planets might exist, according to James Kasting, Evan Pugh Professor of Geosciences at Penn ... more
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Spotlight on China's Moon Rover
The upcoming launch of China's Chang'e-3 Moon lander and rover follows a busy year for the Chinese space program. Awareness of China's growing strength in spaceflight is rising throughout the world. ... more
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Do Black Holes Come in Size Medium?
Black holes can be petite, with masses only about 10 times that of our sun - or monstrous, boasting the equivalent in mass up to 10 billion suns. Do black holes also come in size medium? NASA's Nuc ... more
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