The 950-foot hunk of primordial matter is classified as a "potentially hazardous asteroid," but that doesn't mean it has a ...

Did you know that the sun is up for more hours this month than in August? August is summertime, and May is still spring, so it may not seem quite right.

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ... .</ ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

For years, astronomers have toyed with the idea that the Sun hides an extra planet so distant and dim that even the best ...

NASA scientists have sought to understand planet Jupiter, the gas giant whose mass is more than the rest of the planets in ...

Caroline Delbert is a writer, avid reader, and contributing editor at Pop Mech. She's also an enthusiast of just about ...

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

They reveal a whole new level of detail in these planet-forming systems. Breakthroughs, discoveries, and DIY tips sent every ...

NASA’s Lucy spacecraft captures asteroid Donaldjohanson, marking a new step in its mission to explore the solar system’s ...

An international team of astronomers has found that super-Earth exoplanets are far more common across the universe than once ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...