An asteroid could hit Earth, but scientists are continuing to gather data to understand its trajectory and potential impact ...

The potentially hazardous asteroid Bennu probably won't hit Earth. But this study shows the damage a space rock of its size ...

"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the ...

Over the next several weeks, astronomers will be looking closely at an asteroid called 2024 YR4 that could be as big as a ...

Over the next several weeks, astronomers will be looking closely at an asteroid called 2024 YR4 that could be as big as a ...

Those dust particles would act like a vast planet-wide umbrella, shading Earth from the sun's radiation and reflecting heat energy back out into space. At its peak, the amount of shortwave ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of our Solar System. The planet sizes tested were 1 percent of Earth's mass, ...

On Mercury, the hot days are also incredibly long. Because Mercury rotates so slowly — once every 58 Earth days — in some places, the sun can appear overhead for weeks at a time. A year on ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun If you’ve ever done any public outreach work for astronomy—if you’ve given ...

A massive 500,000-mile-wide (800,000-kilometer) coronal hole in the sun's atmosphere is unleashing a stream of fast-moving solar wind toward Earth, potentially supercharging auroras on Jan. 31 and ...