Is 3I/Atlas an alien spacecraft or just a really interesting rock hurling through the cosmos? That debate has been raging ...

"Remarkable" findings from Yonsei University cast doubt on 'dark energy' theory and claim there is "no evidence" of an ...

China became the first to capture and publicly release close-up images of interstellar object 3I/Atlas ahead of NASA, ...

Evidence now suggests the universe’s expansion has started to slow, not speed up. The findings imply dark energy is weakening ...

On Oct. 3, the comet came within about 18 million miles of the Red Planet. Both China's Tianwen-1 Mars Orbiter and NASA's Mars Reconnaissance Orbiter (MRO) captured it. But while NASA's images remain ...

Jupiter's moon Io stands alone among the solar system's moons. It has more than 400 active volcanoes, and its surface is home ...

As if dark energy weren't already mysterious and baffling enough, new research suggests that this unknown force may not be ...

Rep. Anna Paulina Luna is demanding NASA release 'hidden' 3I/ATLAS images from October. Following public pressure and Avi ...

A handful of extremely massive stars, each heavier than 1,000 Suns, may have sculpted the chemistry of the oldest star ...

New images of the interstellar object, 3I/ATLAS, shows its nucleus and a surrounding coma with a diameter reaching several ...

For decades, it was assumed that the expansion of the universe was accelerating—a theory that won the Nobel Prize. Now, ...