Why Tell Me Why: Meteors and Asteroids
Ever wonder what the difference between a meteor and an asteroid is? Have you always yearned to know the truth about meteoroids? The answers are only a click away!
Most Watched in Astronomy
Assignment Discovery: Black Hole Formation
Theories suggest that when a neutron star is more than three times as heavy as our sun even the neutrons cannot resist gravity, imploding into a black hole. Learn more on Discovery Channel's "Assignment Discovery."
Ask An Astronomer: Falling Moon
Watch this NASA "Ask an Astronomer" video to see why the moon doesn't smash into the Earth. Since the moon is so far away from Earth and is moving so fast, it's actually always falling. It just never hits the earth and stays in a continuous orbit.
Making Martian Mountains
Since there are no plate tectonics on Mars, how did the Red Planet get its mountains? What about Martian volcanoes -- are they still active? How do they compare to those on Earth? Find out the answers in this video.
Space School: Saturn
Saturn may be famous for its rings, but this gas giant also happens to possess the most powerful winds in our solar system. Learn more about Saturn in this segment from the Science Channel's "Space School."
Chandra: Black Holes Explained
Watch this NASA video to learn more about black holes and their place in the universe. The Chandra X-Ray Space Observatory shows the gluttonous eating habits of black holes.
Space School: The Milky Way
Despite being one of billions of galaxies in the universe, the Milky Way is special. Find out why in this video from the Science Channel's "Space School."
Assignment Discovery: Event Horizon
The event horizon is not made of matter, and is, in a sense, just a location where gravity becomes so strong nothing can escape. Learn more about event horizon on Discovery Channel's "Assignment Discovery."
Planet Storm: Dust Storms on Mars
With no water, wind and dust are the major forces that shape Mars' surface. As a result, massive dust storms constantly blanket the surface of Mars. Learn more about the dust storms on Mars on Discovery Channel's "Planet Storm."
Recent Videos in Astronomy
Bad Universe: Imminent Danger
Earth is hit with football-size space objects every hundred years, but there's strong evidence that an extinction-level objects have impacted with us before.
Bad Universe: Doomsday
To replicate what it would be like for a huge asteroid to hit Earth, Phil detonates a to-scale bomb and investigates the results.
Space: Mystery Surrounds Solar Flare Event
Are mysterious particles shooting through Earth during solar flare events? Enough to disrupt the decay rate of radioactive material previously assumed to be constant? Discovery News' Ian O'Neill explains why scientists think that may be the case.
Through the Wormhole: The Balance of Forces
The universe as we know it is possible due to an extremely precise balance of forces. A formula so exact, that one small change would disallow any form of life. Did a divine hand make certain the balance was just right?