Our Milky Way galaxy will endure more than one dramatic collision in the foreseeable future, new research suggests.
The landing site of China's Chang'e 4 lunar mission is a special region that could reveal clues about the moon's formation and the history of the solar system.
As 2019 nears, physicists are hard at work on the next generation of dark matter detectors, and on parsing confusing data from detectors that already exist.
The most distant celestial object ever explored may well have moons, and astronomers are trying hard to find them.
Comet ISON, discovered by two amateur astronomers in Russia, arrived in Earth's neighborhood in November 2013 and apparently broke up as it rounded the sun.
The newest snowman-like image of Ultima Thule (2014 MU69), a pristine object from the dawn of the solar system, is already revealing insights into how planets form.
Pink Floyd has a lot to answer for when it comes to popular ideas about the moon, but here's how to always keep your lunar sides straight.
Brown dwarfs are cooler than stars but hotter than planets, and despite the name, they're not even very brown.
Names matter, even when they're temporary nicknames for objects 4.1 billion miles (6.6 billion kilometers) away from Earth.
NASA's Juno spacecraft has captured an intriguing image of a volcanic plume straddling the line between day and night on Jupiter's notoriously eruptive moon Io.
In the cosmos' most energetic events, we find some truly out-this-world methods of manufacturing radiation.
Only moments before New Horizons flew by the most distant solar system object ever visited, astrophysicist and Queen guitarist Brian May released his new single based on the mission.
Ultima Thule, the weird Kuiper Belt object that NASA's New Horizons spacecraft visited in a historic flyby on Jan. 1, 2019, looks like a cosmic bowling pin, scientists say.