The planet Kepler-10b, spotted by NASA's planet-hunting space telescope, is just 1.4 times larger than Earth.
A new study suggests that a specific kind of galaxy might hold 10 times more red dwarf stars than estimated. That would triple projections for the number of stars in the observable universe, with implications for explanations of how stars and galaxies form and evolve.
Gliese 581g, a newly discovered, first-of-its-kind planet thought to exist in its star's habitable zone, might just be 'noise,' astronomers say.
The case for adding new ground-based telescopes is compelling, astronomy experts say. But they cost $700 million to $1 billion apiece just to build.
The pros are turning major amounts of telescope glass on comet Lulin; the rest of us can see it through binoculars