Rafi Letzter

A popular YouTube channel is trying to convince viewers that photos of an avalanche on an island near Antarctica depict an alien spaceship crash site.

The great physicist's library of work is now complete.

There's something out there that physicists have never seen before, and it's coming up from the bottom of the Earth. Scientists think it's a brand-new particle.

No animal is less related to you than a sea sponge, and they've got the genes and nerveless, anus-less bodies to prove it.

Space junk is a growing problem. Scientists want to fight it with lasers that can de-twinkle the stars.

A never-before-seen particle known as the odderon has revealed itself in the hot guts of two particle colliders, confirming a 48-year-old theory.

A third of Antarctica's vast offshore ice shelves would risk collapse into the ocean if the world warms by 4 degrees Celsius (7.2 degrees Fahrenheit) above pre-industrial levels.

There's a 20% chance of a disastrous collision, according to the European Union.

Back in 2017, a point of strange light flashed through the solar system. Three years later, a new team of scientists claims to have figured out what it was.

NASA conducted its second major test of its powerful new moon rocket, the Space Launch System, and it was mostly a success.

The glands had no openings so they swelled up like "balloons."

The chemicals that tore a hole in the ozone layer are set to make a comeback in the late 21st century, in a process accelerated by climate change.

At some point in the next few weeks, the U.S. plans to fire an extreme, hypersonic weapon. The question remains: What's the point?

The most remote particle detector on Earth has detected the most energetic antimatter neutrino ever, confirming a 51-year-old prediction.

Two of the world's most powerful spacefaring nations are teaming up for their most ambitious project yet: a Chinese-Russian research station on the moon.

If you live in Vermont and heard an explosion just before dinnertime Sunday (March 7), there's a good chance that was a shockwave from an incoming meteor exploding over the state.

Sesame seed-sized hybrids of human and Neanderthal brains sparked briefly to life in a laboratory, offering tantalizing clues as to how the organs have evolved over millennia.

We've got good news and bad news about the latest explosive SpaceX Starship test in Boca Chica, Texas.

SpaceX looks set to launch yet another Starship prototype over Texas today. Two previous tests ended in explosions.

Could this finally confirm whether a piece of her plane has been found?

For the first time ever, you can watch video of a rover landing on Mars. It's amazing.

NASA's Perseverance rover sent home two images immediately upon its successful landing on the Martian surface Thursday (Feb. 18).

NASA's rhinoceros-size Perseverance rover pulled off the most precise landing in Martian history Thursday (Feb. 18), touching down successfully in Jezero crater.

Does the solar system really have a big, dark ninth planet drifting somewhere far beyond the orbit of Neptune? A new paper argues that Planet 9 is a statistical mirage.