General Galactic, cofounded by a former SpaceX engineer, plans to test its water-based propellant this fall. If successful, it could help usher in a new era of space travel. That's a big “if.” ...

Astronomers have found a rocky planet where it should not exist, orbiting far from a cool red star. Could this strange ...

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

Sending a mission to the solar gravitational lens (SGL) is the most effective way of actually directly imaging a potentially ...

Once an eclipse season begins, a pair of eclipses becomes almost inevitable. A new moon occurring near a node produces a solar eclipse when the moon passes between Earth and the sun. Roughly two weeks ...

Their observations of a faint, cool M-dwarf star called LHS 1903 revealed a system with a rocky world at its outer edge. LHS ...

Three months after launch, regulator says groundwork is complete, pension funds and large banks expected to accelerate ...

The moon will pass directly in front of the sun on Feb. 17, setting the stage for a dramatic annular solar eclipse.

Two next-generation satellite missions announced Thursday will help NASA better understand Earth and improve capabilities to ...

Close to the sun, the solar wind, a steady stream of charged particles, accelerates until it cannot turn back. During a record pass about 3.8 million miles above the surface, Parker Solar Probe ...

North Korea-linked Lazarus campaign spreads malicious npm and PyPI packages via fake crypto job offers, deploying RATs and ...

Add Yahoo as a preferred source to see more of our stories on Google. The Hubble Space Telescope time-lapse captured footage of Jupiter, Saturn, Uranus and Neptune. Credit: SCIENCE: NASA, ESA, Amy ...