PHOTO GALLERIES
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ASTRONOMY
Neil deGrasse Tyson thinks first contact with intelligent aliens could look like this
Astrophysicist Neil deGrasse Tyson, through his latest book, explores what first contact with intelligent spacefarers might look like.
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ASTRONOMY
When Brian Cox challenged Avi Loeb's alien probe theory about comet 3I/ATLAS
The discovery of 3I/ATLAS sparked intense debate, with Harvard astrophysicist Avi Loeb claiming it could of alien origin. Here's how physicist Brian Cox responded.
Can we really time travel? Here's what award-winning physicist Brian Cox says
Going forward in time might be possible. Coming back? Not so much. Here’s why.
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ASTRONOMY
Wait, what's that? The strangest things ever spotted on Mars
NASA and ESA have spotted some odd things on Mars. Here's what's really going on.
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ASTRONOMY
Could our galaxy be full of aliens? The famous Drake Equation guides us towards an answer
Discover how the Drake Equation can help us estimate the abundance or absence of intelligent life in our galaxy.
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ASTRONOMY
Mars could become humanity's second home by 2050, says space resources engineer
Could humanity build its second home before the middle of this century? Here's what engineers and scientists think.
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ASTRONOMY
What's really inside a black hole? Physicist Clifford Johnson explains
The mystery of what lies beyond a black hole remains unsolved. Here's what scientists think would happen.
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ASTRONOMY
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DEEP SKY OBJECTS
Could alien technology be easier to detect than extraterrestrial life itself? Scientists share their thoughts
What if alien technology leaves clearer clues than alien biosignatures?
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ASTRONOMY
What if time isn't real? Some physicists think it might just be in our heads
Physicists have spent centuries treating time as a basic fact of the universe. Now, some are challenging that idea. Here's how.
By 2600, Earth could become a "giant ball of fire," Stephen Hawking warned. Is NASA backing it up?
Hawking warned that this population growth can't continue, or it will end badly for Earth. But here's what NASA says.
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ASTRONOMY
Earth's life may have begun after a colossal collision with a Mars-sized planet, studies hint
What if Earth's greatest catastrophe also created the conditions needed for the first living organisms?
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ASTRONOMY
Contacting aliens could be our "biggest mistake in human history," warns physicist; here's why
Earth has been signaling its presence into space for decades. Scientists say that's way too risky.
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ASTRONOMY
This accidental discovery could dramatically reduce astronauts' travel time to Mars
“This was a surprise for me—I was not looking for this."
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SPACEFLIGHT
Astronomer reveals one of the biggest misconceptions about alien life
Could our biggest assumptions about extraterrestrials be wrong? A scientist explains why we're searching the wrong way.
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ASTRONOMY
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ASTRONOMY
Are we going through a sixth mass extinction? Here's what scientists say is happening
Our planet has already survived five mass extinctions. Researchers say we're now living through the sixth. Here's what that means for life on Earth.
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ASTRONOMY
5 facts about our solar system that seem too strange to be true
Think you know the solar system? These 5 facts might surprise you.
4 surprising discoveries NASA's Perseverance rover has made on Mars
Explore the discoveries made by NASA's Perseverance rover that reveal new clues about Mars and its mysterious past.
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ASTRONOMY
Is a fourth dimension hiding right in front of us? Scientists think so
We live every day as if the world is exactly as it appears. But what if, just beyond what we can see, there's a world completely hidden from us?
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ASTRONOMY
5 amazing facts about Saturn's largest moon Titan that you probably didn't know
From having a thick atmosphere to being one of the strongest candidates in the solar system with the potential to support life, Titan is quite fascinating.
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ASTRONOMY
NASA’s Artemis program might finally solve these long-standing Moon mysteries
Scientists hope to use the Moon as a Rosetta Stone for the origin and evolution of Earth and the solar system at large. NASA's Artemis program could enable this.
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SPACEFLIGHT