How Pluto's Sputnik Planitia formed remains unknown, but researchers have imagined a body about the size of Switzerland crashing into Pluto at a shallow angle.
Astronomers have mapped a 20,000-light-year-long fountain of gas blasting from a nearby galaxy and polluting intergalactic space at 450 times the top speed of a jet fighter.
Combining AI and observations of the Milky Way's supermassive black hole, scientists have reconstructed a 3D video of Sagittarius A* and its environment.
NASA and the European Space Agency (ESA) have a long-standing partnership that has resulted in spectacular science missions, including the James Webb Space Telescope and the Cassini-Huygens mission to Saturn.
Planet X and Planet Nine are planets that have, at one time or another, been thought to exist in our Solar System. Both were hypothesized to explain the orbital characteristics of smaller outer Solar System bodies.
The Moon is shrinking in both actual volume and its apparent size from Earth’s perspective. We explain how scientists know this, why it happens, and how it might affect Earth.
China's Queqiao-2 spacecraft will relay communications to Earth to support lunar far side and south pole missions, including missions led by international partners.
Funding for the Near-Earth Object Surveyor, support for VERITAS, and a second lease on life for Mars Sample Return were all included in the final congressional budget for NASA in 2024.
A moon transiting the Sun is awesome, but still doesn’t quite compare to a total solar eclipse. Learn why, find out about Europa Clipper’s message in a bottle, and more.
The Odysseus spacecraft marks the return of U.S. landers to the Moon. JAXA wants you to help name an asteroid. And we’re speaking up for your place in space.
In anticipation of the total solar eclipse on April 8, 2024, The Planetary Society has partnered with the National Park Service to launch a new Eclipse Explorer Junior Ranger booklet.
Distant, icy Uranus has puzzled scientists for decades. From its sideways spin to its mysterious magnetic field, the oddball world has many secrets waiting to be revealed.
Sometimes the Solar System offers up a planetary pair for our viewing enjoyment. Japan has a pair of missions in the news. And the Sun and Moon will pair up to create an eclipse in just 12 weeks.