Staring at the sun—a close (but safe) look at our home star Staring at the sun ... Free learning activities and videos about the solar system Free learning activities and videos about the ...
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 Mars? Test your space smarts and ...
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 ...
With next-generation telescopes, tiny space probes, and more, scientists aim to search for life beyond our solar system ... in the March 2019 issue of National Geographic magazine.
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 ...
Comets are leftovers, scraps of material that didn't make it to planethood in the events creating our solar system. Once, many astronomers believe, the solar system was full of comet nuclei ...
This story appears in the July 2015 issue of National ... our infant world. Over millions of years, that atmosphere escaped into space. Pluto is the only place in the solar system where we can ...
Though seemingly serene when viewed from the relative safety of our home world ... The largest moon in the solar system, Ganymede is also the only moon known to have its own magnetic field.
This story appears in the July 2013 issue of National Geographic magazine ... and stared back at the birth of our solar system. They were stunned by what they saw. Scientists have long known ...