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11.05.07

M51 and Gizmo

In this animated 'Ask an Astronomer' special, innocent alien M51 moves the Earth into a closer orbit around the sun, and learns an important lesson about life in the Universe.

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10.14.05

Do Other Solar Systems Exist?

'Ask an Astronomer' explains how we detect planets around other stars.

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10.14.05

Are Other Solar Systems Like Our Own?

Solar systems come in a large variety of flavors, as this 'Ask an Astronomer' video shows.

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10.14.05

How Do Stars Live and Die?

'Ask an Astronomer' tackles stellar evolution.

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10.14.05

Why Is Spitzer Painted Black?

The Spitzer Space Telescope has a funny paint job. This 'Ask an Astronomer' segment explains why.

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10.14.05

Why Are Solar Eclipses Only Visible in Some Parts of the World?

This 'Ask an Astronomer' episode explains eclipses of the sun and why they can't be seen everywhere.

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10.14.05

What Causes an Eclipse of the Moon?

This 'Ask an Astronomer' episode explains lunar eclipses.

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10.14.05

Why Does the Moon Look Like It Changes?

Phases of the Moon are clearly explained in this 'Ask an Astronomer' episode.

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10.14.05

Can You Feel a Solar Wind?

This 'Ask an Astronomer' segment attempts to explain what a solar wind is (and is not).

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10.14.05

Why Doesn't the Moon Fall Down?

This 'Ask an Astronomer' episode explains how orbits work.

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