Clara Moskowitz

Scientists will be meeting Thursday (Aug. 1) and Friday (Aug. 2) to form a game plan for observing what could be the "comet of the century," comet ISON, due to pass close to the sun this November.

A mysterious spiral of doom — okay, just a spiral-shaped galaxy — has been captured in a new image by the Hubble Space Telescope.

A new portrait of the Milky Way's neighbor, Andromeda, shows our twin galaxy in a whole new light thanks to a new instrument on Japan's Subaru telescope at the summit of Hawaii's Mauna Kea.

The U.S. space agency is in need of more women among its ranks, NASA's second-in-command said last week during a panel on women in space.

A strangely dense spot in the universe populated by a surprising amount of matter has been puzzling scientists since it was revealed in March in an all-sky map made by the European Planck satellite.

Scientists have uncovered a new key to understanding the strange workings of neutron stars — objects so dense they pack the mass of multiple suns into a space smaller than a city.

NASA's Orion capsule, planned to be its next manned spaceship, safely landed during a flight test today (July 24) using just two of its three parachutes.

A giant radio telescope in Chile has captured amazing baby photos of what will eventually be a colossal star 11,000 light-years from Earth. Even more shocking: It's still growing, scientists say.

A temporary exhibition about the space shuttle opened Jan. 17.

Astronomers have detected exotic antimatter particles flying from the sun during solar flares — a discovery that could help scientists understand this mysterious sibling to matter.

An ambitious project aims to image the close environs of a black hole for the first time.

It's been 66 years since something landed on a ranch near Roswell, N.M.

Opportunity launched 10 years ago, on July 7, 2003.

Quantum mechanics is enabling chemical reactions in space that shouldn't be possible.

A Russian Proton-M booster exploded in a fiery crash shortly after launch yesterday.

The new Kennedy Space Center display of Atlantis is awesome, and brings up mixed emotions.

NASA unveiled a new design for its main online portal.