The universe is big, so the news is delayed by the vast gulfs of space it has to cross ... reach it and roughly the same time to return to Earth. By the time the light reaches us, it has spread ...

Year? A light-year is the distance light travels in one year. Light moves incredibly fast — about 186,000 miles (300,000 ...

Doubly unfortunate for those among us eager to visit galaxies far, far away–even moving at near lightspeed isn’t in the cards. “It’s neither possible nor survivable to travel near the speed of light ...

An extreme heating event may have interfered with scientists’ attempts to figure out the Moon’s age by dating lunar rock ...

Sunita Williams' return from space is delayed. Safety concerns with the Boeing Starliner spacecraft caused the delay. NASA ...

Even small asteroids can do a lot of damage—and new research shows the James Webb Space Telescope is adept at spotting the tiniest of space rocks.

The northern lights, also known as the aurora borealis, are mesmerizing ribbons of light that have fascinated ... into our sun's activity, space weather and Earth's magnetic field.

Thanks to the James Webb Space Telescope, we may have spotted a galactic neighbor with all the right molecular ingredients a ...

Although the space agency has confirmed no imminent danger, the close encounters highlight the importance of vigilant ...

For spectators, total solar eclipses – such as the one that dazzled millions in April across North America – represent ...

A BUS-SIZED "mini moon" is in the final days of its trip to ... the light they reflect. "It’s possible that an asteroid of the size of a dishwasher is orbiting our planet at any given time ...