We may soon find out. Earth is a geological oddball in our solar system. This is why. Earth is a geological oddball in our solar system. This is why. How to see the green comet flying past Earth ...

If you were hoping to see the “mini moon,” you’ve probably been disappointed. But experts say the asteroid was an important ...

Solar energy is lauded as an inexhaustible fuel source that is pollution- and often noise-free. The technology is also ...

It’s the ultimate game of find a needle in the haystack. One NASA scientist is betting on AI to help expedite the search ...

Tubeworm larvae, sea snails, and marine worms were uncovered living in tiny caves underneath the ocean floor, revealing life ...

Test Your Solar System Smarts From white dwarfs to space junk, our solar system is filled with mysterious and often mind-blowing phenomena. Do you know asteroids from meteoroids and Venus from ...

This story appears in the November 2015 issue of National Geographic magazine ... is perhaps the strongest incentive for leasing a solar system. Shiv Kumar, a 20-year-old laborer in Madhotanda ...

For the first time, NASA is journeying to this mysterious moon to determine if it might be able to host alien life.

With a radius of 2,106 miles, Mars is the seventh largest planet in our solar system and about half the diameter of Earth. Its surface gravity is 37.5 percent of Earth’s. Mars rotates on its ...

Here and there, in small demonstration projects, engineers are exploring technologies that could turn coal into power without these environmental costs. Yet unless utilities start building such plants ...

The Hubble Space Telescope was designed to free astronomers of a limitation that has plagued them since the days of Galileo—Earth's atmosphere. Shifting air pockets in the atmosphere block and distort ...

This story appears in the November 2015 issue of National Geographic magazine ... by waste heat from a nearby factory, and by solar panels that now cover the roof of the bunker, supported by ...