Satellite images captured a rare glimpse of a phenomenon known as atmospheric gravity waves.
Researchers recently captured the first images of a hidden "monster galaxy" as elusive as the mythical, monstrous yeti.
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.
The grim future of new TNT sci-fi series "Snowpiercer" began with climate change. Could our rapidly warming world undergo a global deep freeze?
A new book tackles the science behind the fantastic technology and sci-fi concepts in the outrageous cartoon series "Rick and Morty."
Twin baby stars snuggle inside a "pretzel" of glowing gas and dust in an image captured by the Atacama Large Millimeter/submillimeter Array telescope.
Students around the world were on the march, calling on global leaders to take meaningful action to curb human activity driving catastrophic climate change.
On Friday (Sept. 20), students around the world will walk out of their classrooms and gather in coordinated protests to highlight the global crisis created by climate change.
Hundreds of orbiting comets and asteroids are thought to present some risk of colliding with Earth, but the threat is typically very small.
An ancient star in the Milky Way holds traces of another star that was among the oldest in the universe.
More than 4,000 photographers shot for the moon (and beyond) for the Astronomy Photographer of the Year competition in the U.K.
Signals written in elements from the early universe have revealed the oldest known merger between two galaxies, taking place less than a billion years after the Big Bang.
Three letters written by Einstein are up for auction, and they offer an intriguing view of his thoughts on quantum physics.
The former leader of the U.S. government's top-secret UFO program has stories to tell, and he is sharing some of them for the first time in a new documentary.
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