A rare planetary alignment is lighting up the night sky—here’s how to see it
Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...
National Geographic news3mon
Solar System
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 ...
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Test Your Solar System Smarts
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 ...
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Planet Mars, explained
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 ...
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Life probably exists beyond Earth. So how do we find it?
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.