The Space Exploration Technologies Corp. (SpaceX) Dragon spacecraft was berthed to the International Space Station at 8:03 a.m. CDT Wednesday, a key milestone in a new era of commercial spaceflight.

Chandra captures stunning views of four planetary nebulas from its first systematic survey of such objects in the solar neighborhood.

Space Exploration Technologies Corp. (SpaceX) Falcon 9 rocket carrying its Dragon spacecraft lifted off from Cape Canaveral Air Force Station in Florida at 8:35 p.m. EDT Sunday, beginning NASA’s first contracted cargo delivery flight, designated SpaceX…

NASA’s Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the presence of a previously unknown stellar-mass black hole.

NASA and its international partners have announced an agreement to send two crew members to the International Space Station on a one-year mission designed to collect valuable scientific data needed to send humans to new destinations in the solar system…

NASA’s Curiosity rover is in a position on Mars where scientists and engineers can begin preparing the rover to take its first scoop of soil for analysis.

NASA’s Curiosity rover mission has found evidence a stream once ran vigorously across the area on Mars where the rover is driving. There is earlier evidence for the presence of water on Mars, but this evidence – images of rocks containing ancient strea…

Astronomers have used NASA’s Chandra X-ray Observatory to find evidence our Milky Way Galaxy is embedded in an enormous halo of hot gas that extends for hundreds of thousands of light years.

Chandra finds evidence of a huge, hot gas halo enveloping the Milky Way galaxy.

WASHINGTON — With the combined power of NASA’s Spitzer and Hubble space telescopes, as well as a cosmic magnification effect, astronomers have spotted what could be the most distant galaxy ever seen. Light from the young galaxy captured by the orbitin…