Sarah Lewin

In Season 3 of Syfy's "The Expanse," the crew of the Rocinante are stuck amidst Earth, Mars, the asteroid belt, and a mysterious and dangerous "protomolecule" whose true purpose is unclear.

In "Chasing New Horizons" (Picador, 2018), Alan Stern and David Grinspoon trace the many obstacles faced by NASA's New Horizons mission to Pluto — both before and after launch.

The new podcast "The Habitat" takes listeners into the dome of a simulated Mars mission, where six volunteers live for a year in isolation from the outside world in the lava fields of Hawaii.

With the moon as its immediate goal, NASA is pushing hard on deep space exploration.

For a few billionths of a second, two samples of iron alloy felt the crushing pressure at the center of a giant, rocky planet three times the size of Earth.

A moderate geomagnetic storm kicked up in Earth's skies this morning (April 20), bringing green and rare electric-blue auroras that stretched as far south as Indiana.

After a delay, SpaceX is winding up again to launch NASA's Transiting Exoplanet Survey Satellite (TESS) today (April 18) from Cape Canaveral Air Force Station in Florida.

In "Before Mars," a geologist arrives at a small Mars base after a lengthy journey, only to realize that things aren't as they seem.

SpaceX is gearing up to launch NASA's next big exoplanet hunter on Monday (April 16), with a successful test-fire of its Falcon 9 rocket under its belt.

National Geographic is in the early stages of development for a TV series inspired by 2016's "Hidden Figures," according to a new report from Variety.

War is on for Earth, Mars and the asteroid belt in Season 3 of "The Expanse," starting tonight (April 11) at 9 p.m. EDT/8 p.m. CDT on Syfy.

In S.J. Morden's "One Way" (Orbit Books, 2018), a private company gives eight criminals a way out of life in prison: a one-way trip to build a base on Mars.

"2001: A Space Odyssey" premiered 50 years ago today (April 3), making now a perfect time to look back on the key personalities that created the iconic film.

China's Tiangong-1 space lab burned up in the atmosphere over the southern Pacific Ocean late last night (April 1), falling right in the middle of the window predicted by a number of organizations.

Google's latest homepage Doodle celebrates Guillermo Haro, a Mexican astronomer who in 1959 became the first Mexican elected to the Royal Astronomical Society.

Three veteran space fliers lift off today (March 21) on a Russian Soyuz spacecraft, beginning a 50-hour journey to the International Space Station.

The National Oceanic and Atmospheric Administration (NOAA) celebrated a crisp start to spring today (March 20) in the Northern Hemisphere with a stunning view of Earth from sunset to sunrise.

NASA's robotic space station crewmember could head down to Earth as early as May for repairs.

New work helps to codify the cause and properties of "Steve," an aurora-like phenomenon documented by citizen scientists as it streaked across the sky in western Canada.