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The Apollo 11 lunar laser ranging retroreflector array.
An Old Science Experiment On The Moon

The most famous thing Neil Armstrong left on the moon 35 years ago is a footprint, a boot-shaped depression in the gray moondust. Millions of people have seen pictures of it, and one day, years from n ...
Smoke demonstrates the wakes caused by this jet.
The Sound of Turbulence

Do you ever watch the water tornado that forms in a draining bathtub? Woe unto any rubber ducky floating aimlessly in the vicinity; the water's force will pull it down into the tornado. The center of ...
M82, at a distance of 11 million light years, is a rare nearby starburst galaxy where stars are forming and expiring at a rate ten times higher than in our galaxy.
Starburst, No, Not The Candy

A starburst galaxy is a galaxy experiencing a period of intense star forming activity. Although this activity may last for ten million years or more, that is like a month in the life of a ten billion ...

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