Sarah Lewin

NASA honored the 97-year-old mathematician Katherine Johnson today by dedicating a building in her name at the space agency's Langley Research Center in Hampton, Virginia.

A NASA long-duration balloon mission observed glowing blue clouds that ripple at the edge of Earth's atmosphere.

A new view of the Orion Nebula, the "deepest and most comprehensive view ever," reveals a preponderance of low-mass, planet-size objects in the famous star-forming region.

A new, comprehensive atlas of worldwide light pollution reveals that one-third of all people cannot see the Milky Way in the sky, including nearly 80 percent of North Americans.

After spending nearly a year on the International Space Station during a record-breaking mission, retired astronaut Scott Kelly knows a thing or two about orbiting the Earth.

Get ready for the 50th anniversary of Apollo at the Intrepid Sea, Air & Space Museum with historian and author Douglas Brinkley.

Celebrate the 50th anniversary of NASA's groundbreaking Apollo program — and the 20th anniversary of Space.com — with a set of three free posters!

"Children of Ruin" probes alien minds of terrestrial and extraterrestrial origin.

NASA's Apollo program was transformational technologically, scientifically and politically, and it reverberates today in how the country sees itself and its accomplishments.

Just a month into a new observing round after significant improvements, gravitational-wave detectors have already used ripples in space-time to pinpoint five collisions of cosmic proportions.

As the forces of the universe muster against the ultimate villain Thanos for "Avengers: Endgame" (2019), Space.com took a look back at how the MCU has related to outer space.

In "Delta-v" (Dutton, 2019) by Daniel Suarez, out today (April 23), an unpredictable billionaire recruits an adventurous cave diver to join the first-ever effort to mine an asteroid.

SpaceX's upcoming cargo launch is still on track after a recent anomaly during a test of their Crew Dragon capsule.

Look up: It's the Lyrid meteor shower!

A new documentary April 15 from Science Channel follows SpaceIL's Beresheet mission, the Israeli moon lander that failed and crashed into the lunar surface.

A year on the space station has an undeniable impact across the human body, but many of the body's systems recover after a return to Earth.

Canadian astronaut David Saint-Jacques snapped a photo of a Russian cargo spacecraft's zigzag launch trail from the International Space Station this morning (April 4).

India's recent anti-satellite test created 60 pieces of orbital debris big enough to track, 24 of which rise higher than the International Space Station's orbit around Earth.