Space

After an engine failure this morning, American and Russian administrators are rushing to find the cause of the problem so they can replace the crew of the ISS before 2019.

Two astronauts had to make an emergency landing this morning after an engine failure on a joint US-Russian mission to the ISS.

Blue Origin signed a letter of intent with two German space companies to deliver supplies to the Moon by 2023.

A new study suggests that the Jupiter-sized planet Kepler-1625b may host a Neptune-sized moon.

The world called 'Goblin' orbits about two times farther from the Sun than Pluto—and that's at its nearest point.

NASA's former chief technologist Mason Peck discusses the past, present, and future of the agency that took humans to the moon.

The Hayabusa 2 mission is visiting an asteroid 200 million miles from Earth to collect samples. The mission profile involves a lot of robots, bullets, and explosives.

The mission, called "Dear Moon," is tentatively scheduled for 2023 and will be the first crewed mission with SpaceX's BFR spacecraft.

On Friday, NASA debuted the teams that will pilot America’s two commercial spacecraft: Boeing's Starliner and SpaceX's Crew Dragon.

Trump sees space as a “warfighting domain.” The Outer Space Treaty disagrees.

Astronomers have been watching the full fallout of a tidal disruption event for years.

From 'Star Trek' to 'Dinosaucers,' exodinosaurs have held a mirror to humanity's hopes and anxieties.