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A NASA X-ray telescope reveals an unusual ring of eight black holes.
Does a shroud of energy from the Big Bang bear scars of other universes?
Astronomers propose a new theory to explain Saturn's unusual rings.
A huge galactic smash-up may have formed the galaxies nearest us.
Astronomers say a black hole recently formed in a nearby galaxy.
A NASA lunar probe reveals that the Moon stores more ice at its poles than previously thought.
Scientists are reproducing supernova explosions on computer screens.
A new Hubble Space Telescope image shows a galaxy with a complex identity.
A local star is the most massive ever detected.
Scientists chart new asteroid territory in order to understand the early Solar System.
A rock collected by the Apollo 17 mission in 1972 yields a surprise.
The Swift satellite, NASA's high-energy detector, is studying black hole mysteries.
In a nebula packed with stars, not all stay with the crowd.
Asteroids may have delivered water to early Earth.
State-of-the-art spacecraft observes our Sun with unprecedented detail.
Satellites go wide, then zoom in on galactic dust.
Ancient quartz crystals reveal our young planet's magnetic field.
Astronomers get a fresh perspective on the Orion Nebula.
Hubble is watching seasons change on the dwarf planet.
Hubble captures the most distant, ancient galaxies ever seen.
AMNH astronomers have revealed a long-hidden star in the Big Dipper's handle.
NASA's new infrared telescope is set to reveal thousands of space objects.
Forty-year-old lunar samples contain trace amounts of water.