How Can We See a Black Hole?

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08.24.06

If no light escapes from a black hole, how can we detect them? 'Ask an Astronomer' explains.

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How Can We See a Black Hole?

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Spitzer Podcasts

Browse Videos in Ask an Astronomer

Where Is the Center of the Universe?

W-5 Star-Forming Region

Why Is the Sky Blue?

What's Between the Stars?

Spitzer's Fifth Anniversary

What Will Happen to the Earth When the Sun Dies?

Can a Planet Have Two Suns?

Can a Galaxy Die?

Why Aren't There Any Green Stars?

How Do You Discover an Asteroid?

Infrared: More Than Your Eyes Can See

M51 and Gizmo

What Happens When Galaxies Collide?

What Is the Nearest Galaxy to the Milky Way?

Why Isn't Pluto a Planet Anymore?

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Do the Stars Really Move?

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