Space

If correct, the new theory would mean these black holes would all have about the same mass.

Galaxy 12 billion light years away is spewing out stars 1,000 times faster than the Milky Way.

From jaw-dropping pictures of interlacing galaxies to man’s first steps outside of Earth, these are NASA’s most incredible images so far.

The world of flora has long been a source of cancer-fighting therapies. The drug paclitaxel, for example, originally came from the Pacific yew tree.

This year's shortlist includes magical images of the Milky Way and Northern Lights, as well as sights from across our Solar System, galaxy and the wider universe.

The trip was just a hair longer than an average Boston Red Sox–New York Yankees game.

The Strawberry Moon graced the sky with its presence in the late hours of Wednesday and the early hours of Thursday.

The suit also says that they slandered him by saying he is suffering from dementia and Alzheimer’s.

Mars is more than just a red planet.

As Trump argues "we must have American dominance in space," Russia and China are attempting to stake their own claim to the final frontier.

Scientists discovered a new form of photosynthesis that could expand the search for alien life and help with genetically engineering crops to live in lower light conditions.

Trump is launching a new military branch: the "space force.”

If only the dinosaurs had such technology.

The spacecraft's target is more than four billion miles away from Earth.

Some of the most stunning photos of the planets and moons in our solar system, including our own.

Astronauts Drew Feustel and Rocky Arnold will spend more than six hours outside of the ISS Wednesday.

Dead & Company, featuring Grateful Dead surviving members Bob Weir, Mickey Hart and Bill Kreutzmann, begins its North American tour on May 30.

A bill proposes spending $10 million a year.

Alan Shepard, Mercury 7 astronaut, had a long career with NASA that included being the first American to travel to space, landing on the moon and working as the head of the Astronaut Office.

Astronauts on the International Space Station do not even have sinks because of the way water behaves in microgravity.

From the first moon landings to vertigo-inducing space walks and high-resolution images of deserts, glaciers and cities on our planet.

The anti-satellite weapons are part of massive pushes to upgrade and update their militaries.

Tiangong-1 is on its way home with a vengeance, but can it really hurt you?

Space weather storms have happened since the birth of the solar system, and have hit Earth many times.

Scientists think the star was once part of a binary system until its companion exploded in a powerful supernova, causing it to be blasted off into space.

Other early satellites—such as Sputnik 1, the first satellite to leave Earth in 1957, and Explorer 1, the first US satellite—have long since re-entered the atmosphere and burnt up.

The professor who mistook Mars for a new space object is tired of the commotion around his non-discovery.

No worries—humanity will be long gone by the time the universe implodes.

Russia said the U.S. may risk "opening a Pandora's box" if it takes their military rivalry to outer space.

The distant planet may have an ideal temperature for liquid water.