On Dec. 12, 1967, NASA launched the Pioneer 8 spacecraft on a mission to study the sun. [‘On This Day in Space’ Video Series ...

For the next half-century, Earth will have a new celestial companion. A small asteroid, officially designated 2025 PN7, has been confirmed as a quasi-satellite—a rare type of near-Earth object that ...

The internet is buzzing after reports claimed NASA confirmed Earth now has two moons. But before you picture a new glowing orb in the sky, scientists say that’s not exactly the case. What researchers ...

Instead, it was orbiting parallel to Earth, following the same orbit around the Sun. That makes it a “quasi-moon,” a sort of space companion that plots out its course in sync with Earth but is not ...

NASA announced its latest class of astronauts, which includes Anna Menon. Menon is the first NASA astronaut to have orbited Earth before being selected. She previously flew on the private Polaris Dawn ...

NASA's MAVEN spacecraft, led by scientists at the University of Colorado Boulder, has lost communication with ground stations on Earth after orbiting behind Mars.

Interstellar Comet 3I/ATLAS will reach perihelion, its closest approach to the Sun, on October 30, 2025, marking the climax of its brief, hyperbolic trajectory through our solar system before its ...

An exponential increase in the number of satellites placed in low-Earth orbit has brought advances in telecommunications ...