This story appears in the July 2013 issue of National Geographic magazine ... unaltered material that everything formed from in the solar system.” Comet DustIn a NASA clean room a scientist ...

A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But ...

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 ...

Any water present on a planet orbiting here can remain liquid, given the right atmospheric pressure. On planets orbiting ...

This story appears in the September 2009 issue of National Geographic ... has invested heavily in solar power. None of those plants yet include a storage system. Since photovoltaics produce ...

Though costly to implement, solar energy offers a clean, renewable source of power. 3 min read Solar energy is the technology used to harness the sun's energy and make it useable. As of 2011 ...

With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of ...

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 ...

They are stored in the Oort cloud, a huge, diffuse sphere of cometary nuclei in the far reaches of the solar system. Close to the sun, yet still beyond Neptune, circle what may well be their ...

Need a new idea to keep kids entertained? Try stargazing. Free learning activities and videos about the solar system Free learning activities and videos about the solar system Free learning ...

Is there a 9th planet out there? 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. This image ...