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Space Exploration
The asteroid is expected to come within 140,000 miles of Earth — well inside the moon’s orbit.
Three fundamental forces matter inside an atom, but gravity is mind-bogglingly weak on those scales. Could extra dimensions explain why?
Looking at our planet with post-Copernican eyes has the power to change how we relate to it and each other.
With ~400 billion stars in the Milky Way and 6-20 trillion galaxies overall, that makes for a lot of stars. But not as many as you'd think.
The "Ring Nebula," known for almost 250 years, is so much more than a Ring. With JWST's capabilities, we're seeing more than ever before.
By looking down, scientists are looking back in time.
The Universe isn't just expanding, the expansion is also accelerating. If that's true, how will the Milky Way and Andromeda eventually merge?
The first observational evidence showing the Universe is expanding is 100 years old now: in 2023. Here's the story of its 100th anniversary.
Whether you call it 10 quintillion, 10 million trillion, or 10 billion billion, it's a 1 followed by 19 zeroes.
As Marcel Proust said, “The real voyage of discovery... consists not in seeking new landscapes, but in having new eyes.”
It could cut the time needed to reach Mars in half.
Each of our three nearest stars might have an Earth-like planet in orbit around it. Here's what we'll learn when we finally observe it.
Can two planets stably share the same orbit? Conventional wisdom says no, but a look at Saturn's moons might tell a different story.
Over 50 years since humans last walked on the Moon, astronaut footprints and rover tracks are still visible. But they won't last forever.
We may be the last generation born not knowing if we are alone in the Universe.
The concept of the warp drive is currently at odds with everything we know to be true about physics.
The giant impact theory suggests our Moon was formed from proto-Earth getting a Mars-sized strike. An exoplanet system shows it's plausible.
A Harvard astronomer went to the bottom of the ocean, claiming he recovered alien technology. But what does the science actually indicate?
Get ready for the most peculiar road trip that will help you understand the vastness and emptiness of the solar system — and Sweden.
Some 55 million light-years away lies the giant galaxy Messier 87. Its supermassive black hole, inside and out, looks better than ever.
For thousands of years, we puzzled at how far away the Moon was. Today we know its distance, at any time, to within millimeters.
When you turn a map of East Asia upside down, Beijing’s geographic constraints and regional ambitions become much clearer.
While Saturn and its moons all appear faint and cloudy to JWST, Saturn's rings are the star of the show. Here's the big scientific reason.
There's an entire Universe out there. So, with all that space, all those planets, and all those chances at life, why do we all live here?
In one experiment, the Viking landers added water to Martian soil samples. That might have been a very bad idea.
Particles behave differently when freed from the force of gravity. A new space factory aims to use this to synthesize pharmaceuticals.
From a photon's viewpoint, the Universe is timeless and dimensionless.
The truth is out there, but it's probably not in the latest whistleblower's report.
In a far-reaching discovery with astrophysicist Karolina Garcia, we discuss what's in the Universe and how it grew up.
The brightest gamma-ray burst ever observed, GRB 221009A behaved in unexpected ways that might help us understand how they occur.