Gravitational lensing reveals a very hungry black hole.

LIGO detectors open a new window on the universe.

AMNH researchers examine the chemistry of exploding stars.

A large, unseen planet may be lurking in the furthest reaches of our solar system. 

Mars's larger moon may be cracking up.

Flyby delivers sharpest view of distant, icy world. 

A landmark anniversary for a powerful telescope.

Wavelengths across the spectrum illuminate Chandra images. 

Gas traces in a supernova remnant map the star's violent end.

A mission that began a decade ago reaches its destination.

Time may be running out for the Great Red Spot.

High-energy emissions at a dead star’s core show how it exploded.

Amid cloudy skies, a nearby stellar explosion is spotted.

Telescope observations reveal atmospheric water on exoplanets.

Exoplanet details are finally coming to light.

The United Nations calls for an asteroid defense plan.

Constant vigilance rewards hobbyist astronomers.

A pulsing star at our galaxy’s heart shares a black hole’s secrets.

Observations of a star’s magnetic field reveal unusual behavior.

Watch the latest Mars rover hunt for signs of life.

Two giant galaxies combine to form a massive ellipse.

Planet-forming particles swarm an unlikely star host.

Plentiful ice in the Saturn system hints at its age.

Astronomers measure how fast a black hole spins.

A river valley found on a distant moon resembles Earth’s Nile.

A giant hole in the dust disk around a star could hold multiple planets.

Students partner with NASA to direct cameras orbiting the Moon.

An enormous telescope observes the Universe's oldest light.

An enormous galaxy cluster is birthing stars at a furious pace.

NASA’s mission control guided Curiosity to a perfect landing in Gale Crater.

Sky-gazers caught a rare glimpse of Venus framed by the Sun.

The first private mission visits the International Space Station.

The Space Shuttle Enterprise took a final flight on the way to its new home in NYC.

NASA’s Dawn spacecraft captures detailed images of a giant asteroid’s alien landscape.

Infrared data from two telescopes combine to expose rapid growth of infant stars.

NASA's airborne observatory captures views unmatched by ground telescopes.

Recent finds add to a growing list of nearby Earth-like planets.

Twin satellites investigate the lunar surface and structure.

Curiosity rover launched on November 26, beginning its long journey to Mars.

Newly discovered dwarf galaxies are fast and furious in their production of stars.

Astronomers observe a rare supernova—the closest to Earth in nearly a century.

The WISE mission catches sight of a faint, elusive type of brown dwarf.

Scientists suspect a distant planet has a magnetic field.

The search for the intermediate objects between stars and planets.

MESSENGER returns the first images from its orbit around Mercury.

A close view of the asteroid Kleopatra and its two moons gives clues to planet formation.

Become a citizen scientist and help measure light pollution in your area.

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.