New dynamical simulations suggest that the mysterious unseen world might be an interstellar rogue that was captured by our solar system.
Grounded since a September explosion, Elon Musk's private spaceflight company is aiming to launch 10 communications satellites into orbit from California on Saturday morning.
Since November, European Space Agency astronaut Thomas Pesquet has been taking photographs of Earth from the International Space Station, and the results have captivated the world.
The B612 Foundation reacts to NASA's decision not to fully fund a hazardous asteroid-hunting mission, urging the next administration to pick an infrared space telescope that would seek out near-Earth asteroid threats.
Lacking a strong magnetic shield, Pluto's thin atmosphere is being eroded into space — but Charon is doing its bit to protect its dwarf planet buddy.
Our galaxy may have pickpocketed stars — and a healthy scoop of dark matter — from an unsuspecting nearby dwarf galaxy.
Earth's companion may have formed within 60 million years after the birth of the solar system, setting the stage for an earlier evolution of life.
Using the Hubble Space Telescope, astronomers might have just found a new way to discover alien planets.