This Just In
US astronaut Edgar Mitchell, one of just 12 people to have walked on the moon, has died.
A NASA spacecraft now has Jupiter more squarely in its sights ahead of its July 4 arrival at the solar system's largest planet.
In November 2014, the plucky lander Philae touched down on a comet, making headlines worldwide. A hard landing drastically shortened its lifespan, but scientists still gleaned a ton of new information about comets.
An asteroid as long as a basketball court will give Earth a close shave next month.
Explore some of the more unusual pictures of Apollo 14, 45 years after it landed on the moon.
Like the icebergs that float in Earth's Arctic Ocean, it seems Pluto has water ice 'hills' that float atop an ocean of frozen nitrogen.
If a material is thicker, it should be less transparent, right? It turns out that in Saturn's rings, that's not always the case.
Tune in tonight at 7 p.m. for a fascinating Perimeter Institute public lecture on the physics and mysteries behind neutron stars.
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