PHOTO GALLERIES
5 PHOTOS
ASTRONOMY
Water likely isn’t forming gullies on Mars today, NASA orbiter data suggest
On Earth, flowing water cuts gullies like the ones on Mars, but a survey found no evidence that abundant liquid water was involved.
5 PHOTOS
ASTRONOMY
WWII airmen saw mysterious UFOs trailing their planes, and the sightings are still unexplained
Near the end of World War II, crews of the 415th Night Fighter Squadron began reporting lights over the Rhine Valley that they could not identify.
Dark energy may be changing over time, and this new study could explain why
The giant map of the universe hints that dark energy may have been changing over time. Here’s how.
5 PHOTOS
ASTRONOMY
Why do we exist? Scientists say a long-overlooked particle may hold a clue
If matter and antimatter had destroyed each other, nothing would be here. This overlooked particle may help explain why that didn’t happen.
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ASTRONOMY
Rendlesham Forest UFO mystery: What two US airmen said happened in 1980
Two US airmen reported strange lights in Rendlesham Forest in 1980. Here’s what happened next.
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ASTRONOMY
The most unsettling explanations for why we haven’t found aliens yet, according to scientists
For decades, scientists have tried to explain why the universe seems empty, and the answers they have come up with are anything but reassuring
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ASTRONOMY
What would happen if you traveled at the speed of light? Scientist explains
At such extreme speeds, time would slow down, and stars would appear to change color. Here’s what you could experience.
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ASTRONOMY
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SPACEFLIGHT
Aliens that look like 'Greek gods' and 'gorilla-reptiles': UFO whistleblower's wild claims on Joe Rogan's podcast
UFO whistleblower and former Air Force officer David Grusch claims that different types of aliens have been found on Earth, and some are engaged in conflict against each other.
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ASTRONOMY
Could alien life survive on Saturn’s icy moon? New study offers promising clues
The search for alien life continues, and a new study points to a promising moon in our solar system.
The US Army reported recovering a “flying disc” in 1947. Then it changed its story
For decades, the incident has fueled speculation about UFOs and alien visitors, but declassified records point to a very different explanation.
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ASTRONOMY
A US pilot chased a mysterious UFO for 27 minutes in 1948. Here’s what happened next
In 1948, a North Dakota Air National Guard pilot reported a 27-minute encounter with a mysterious white light over Fargo.
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ASTRONOMY
What is the Great Filter and why could it be alarming for humanity? Examining one solution to the Fermi Paradox
The Great Filter hypothesis attempts to explain why we have not encountered alien life in a vast, seemingly unending universe. However, its implications may not bode well for humanity.
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ASTRONOMY
This new world isn’t quite a planet or a moon, and astronomers are puzzled about what to call it
The object orbits a brown dwarf about 71 light-years from Earth, and the team says it is unlike any moon in our solar system.
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ASTRONOMY
NASA's Artemis II crew reported "almost swamp-like colors" on the Moon: See the images
Four astronauts spent nearly seven hours circling the Moon, and their notes describe a far more colorful Moon than the one we see from Earth.
5 PHOTOS
ASTRONOMY
5 PHOTOS
ASTRONOMY
The first-ever green star: New study shows that stars don't necessarily have to blue, white, or orange
Stars have long been believed to be either blue, white, or orange, depending on their temperature. A new study focused on white dwarfs, however, has shown than this may not always be the case.
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ASTRONOMY
Is there a hidden cave under this Moon pit? NASA is sending instruments to find out
Scientists can see the pit from orbit, but only instruments on the ground can show whether it leads anywhere.
A giant star 2.5 million times brighter than the Sun vanished from view. Scientists may know why
When researchers returned to study the distant star, they found no sign of the massive object they had been tracking for years. Here’s what happened.
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ASTRONOMY
Astronomers found a giant planet that should have been swallowed by its dying star
The strange system may offer clues about how planets can survive some of the most violent changes their stars undergo.
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ASTRONOMY
An astronaut suddenly couldn't speak in space, and NASA still doesn't know why
A sudden illness cut a NASA crew's space station stay short, and doctors still don't have an answer. Here’s what happened.
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ASTRONOMY
Stunning ‘space jellyfish’ appears over the East Coast after SpaceX’s CRS-35 launch; See photos
Eyewitnesses called the view ‘just beautiful beyond belief.’ Here’s a look at the stunning images from the launch.
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SPACEFLIGHT