Scientists have spotted an incredibly weird, 'impossible' white dwarf star in a discovery that suggests these objects are even more common than suspected.
On Monday, students across the U.S. will use Mercury's transit to measure the distance between Earth and the sun.
Asteroids and comets hidden in Jupiter's shadow may be in "safe mode" now, but a small change could send them flying towards Earth.
Once upon a time, a spacecraft made a dramatic quest to a distant land to bring back a treasure — and some science.
Astronaut and medical doctor Serena Auñón-Chancellor weighs in on how experiments on the ISS help medical research on Earth.
The Dream Chaser space plane continues to eye future crewed trips to the International Space Station, despite the plane's cargo focus.
The U.S. has declared its intention to once again put boots on the moon. That sort of exploration comes with a giant price tag, leaving some to wonder where the money will come from.
NASA is working with private companies to send humans back to the moon. But what happens if those companies get there first?
Roughly 80% of the mass of the universe is made up of dark matter, a material that scientists cannot directly observe. So why do scientists think it dominates?
Black holes are mysterious objects of extreme density, with such strong gravitational attraction that even light cannot escape from their grasp if it comes near enough.
The elusive solar corona will be a key point of scientific studies during the July 2, 2019 total eclipse.
'Oumuamua, the first known interstellar visitor, doesn't need an extraterrestrial solution to explain its oddities, according to a new study.
Despite signs that they are at the end of their lifetime, some galaxies may continue to produce stars, contrary to expectations.
The mysteriously quiet behavior of the Milky Way's supermassive black hole may be influenced by magnetic field lines.
Most of the star nearest to Earth are red dwarfs, but they are too dim to be seen with the naked eye.
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