This image of the core of galaxy M100 shows faint structure as small as 30 light-years across in a galaxy tens of millions of light-years away, made possible by The Hubble Space Telescope's improved optics.
Even though sun-watchers have recently gotten the tools to dig deep into the underlying mechanisms driving sunspot cycles, it’s still been hard to understand Earth’s host star.
Kepler-10c is 17 times as massive as Earth, but it isn't a gas giant, say scientists at the American Astronomical Association meeting in Boston.
A newly discovered rocky planet, 17 times the mass of ours, has been called the 'Godzilla of Earths.'
NASA's Hubble Space Telescope has taken the deepest view yet of the gassy, dusty, Tarantula Nebula, located some 160,000 light-years away.
KOI-314c, a hot and gaseous planet, located 200 light-years away might have the same mass as Earth. But having the same mass as Earth doesn't necessarily make it habitable, say scientists.
The galactic spiral arm where our solar system resides may be a big deal after all, according to a new analysis.
Astronomers should dramatically ramp up the sky surveys, not only to better prepare for threats to Earth but also to exploit asteroids' contents, scientists say.
Scientists are planning a new route for NASA's New Horizons space probe as it approaches a potentially perilous path toward Pluto. They aim to chart a safe, but interesting course.
The alien planet, called PH1, is a gas giant planet slightly bigger than Neptune.
The catalogue of newly found planets is becoming richer by the day. By one new estimate, virtually all the billions of stars in the Milky Way could have a planet orbiting them.