The sun has been awfully quiet lately, but that could change starting this month, scientists say.
A scarlet fan spread across the skies over Japan 1,400 years ago, and it's been puzzling astronomers ever since.
NASA's first two commercial deliveries to the moon are still on track despite the COVID-19 pandemic, according to agency leadership.
Want to build the largest radio telescope to fly in space to date? Here's an easier technique: Design six tiny satellites to fly in formation and work together.
Astronomers have gleaned their first insight to what the jets blasting off of supermassive black holes may have done to surrounding gas in the young universe.
As the coronavirus-borne disease spreads around the world, India's space agency has responded by pausing launches and pivoting resources to develop ventilators and hand sanitizer.
NASA's next mission to Mars will carry what is meant to become the first aircraft to fly on another planet, and that experimental helicopter just spun its blades on Earth for the last time.
There are at least two bright spots in these strange times: Telescopes are still studying distant galaxies and penguins are still pooping across Antarctica.
As countries have shut down to slow the spread of the new coronavirus, satellites in orbit around Earth are noticing resulting changes to our home world.
Buried inside data Voyager 2 gathered at Uranus more than 30 years ago is the signature of a massive bubble that may have stolen a blob of the planet's gassy atmosphere.
Snatching a piece of asteroid Bennu was supposed to be — well, not easy, but certainly manageable: scope out the space rock, find some flat spots, swoop down at one, come back home.
If President Donald Trump's budget request becomes reality, NASA may need to shuffle some Red Planet missions, including developing a new Mars Ice Mapper.
As the U.S. scrambles to respond to the spreading COVID-19 pandemic, NASA supercomputers are joining the effort to look for potential treatment and vaccine candidates.
What could a massive new telescope in Hawaii teach astronomers about the universe — and why are some native Hawaiians fiercely opposed to the project?
As many NASA centers switch to mandatory telework to confront the spread of COVID-19, NASA leadership acknowledged that prized science missions may suffer delays.
It's tough being in a new environment, even for comets. According to recent observations, interstellar Comet Borisov may be having outbursts triggered by flying past our sun.
Spring is coming early to the Northern Hemisphere (and fall to the Southern) and Google has two new balloon-themed doodles to celebrate the changing seasons.
The COVID-19 pandemic has forced a global network of telescopes to cancel its annual observations of black holes, which last spring published the first ever image of such an object.
As a frightening pandemic sweeps across the globe, it is becoming ever clearer that every aspect of life will be affected by it, even the study of what lies beyond Earth.
Planetary scientists and astrobiologists are gearing up for a major survey process that will dictate NASA's priorities throughout the 2020s.
As the world scrambles to confront the disease caused by a novel coronavirus, Italy has been forced to take such dramatic measures that the country's emissions have changed, as seen from space.
It's an image of the sun like nothing anyone has ever seen: glowing, golden kernels divided by dark latticework, like a stained-glass window forged by astrophysics.
A 24-hour day seems so natural here on Earth, but 70 million years ago, that would have felt leisurely to creatures accustomed to making do with just 23.5.
Space.com sat down with Sarah Scoles, author of "They Are Already Here: UFO Culture and Why We See Saucers."
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