A mysterious bird and its seemingly huge talons photobomb an all-sky camera's view of the cosmos in this lucky shot from the La Silla Observatory in Chile.
Was Venus once covered in a liquid water ocean? A new study suggests it was not, which could diminish hope that eons ago, warm and wet conditions allowed life to arise on the planet.
Observations of the interstellar Comet Borisov have been flooding in for six weeks, and the more astronomers duplicate one another's work, the more confident they are in their analysis of the object.
A new video from NASA shows how a supernova explosion morphs and changes during a 13-year period, including unusually fast-moving shock waves.
A new meteorite addition to the Field Museum's collection resembles a malodorous mud brick, but it holds important clues about the origins of life on Earth.
A fast-moving visitor is approaching our cosmic neighborhood. Dubbed 2019 SX5, this near-Earth object is about the size of the Great Pyramid of Giza.
When 'Oumuamua passed through our solar system in 2017, no one could figure out where the object came from. But astronomers think they've worked out how Comet 2I/Borisov got here.
Polish scientists are developing a first-of-its-kind cubesat mission to Mars that could launch as early as 2022.
An Indian spacecraft may be orbiting the moon, but it's also gathering valuable data about other key players in our solar system.
Using 10 years of data from NASA's Hubble Space Telescope, the team of astronomers concluded that there is more gas coming into our galaxy than leaving it.
The smaller a planet, the more difficult it is to spot — which is frustrating for scientists hoping to find Earth-like worlds.
There used to be nine planets. Now there are eight, or maybe there are nine after all. Whichever you prefer, here is a list of them in the order they appear in the solar system.
Earth's magnetic field flipped 26 times every million years during the Cambrian period, the highest frequency ever documented.
Chilean officials are investigating a curious collection of burning objects that fell onto parts of the country last week.
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