The most unsettling space images are not of black holes or distant galaxies, but of stars that look eerily like our own Sun ...

Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial rocks reveals. When you purchase through links on our site, we may earn an ...

The internet has been abuzz with the possibility of sky watchers seeing a “smiley face” in the eastern sky above the horizon on Friday morning before dawn. Just so you know, some of the graphics used ...

The sun’s rhythmic rise and fall in the sky can make it easy to forget that our star is unpredictable—a roiling, burbling mass of magnetically knotted plasma that governs the entire solar system. The ...

This is read by an automated voice. Please report any issues or inconsistencies here. Astronauts return to the moon for the first time in 50 years — though not on its surface — alongside robotic ...

This isotope is found at a ratio of about one per 2,500 helium-4 ions, the latter being the common version of helium. When you purchase through links on our site, we may earn an affiliate commission.

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since April 2024 ...