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What is a supernova?

When a star reaches the end of its life, it explodes in a spectacular explosion of light known as a supernova. Supernovae may outshine whole galaxies for a short period and emit…

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Why do clouds move?

Clouds are one of Earth’s most fascinating phenomena. Weather changes (mostly precipitation) are influenced by them, but they also perform several other functions. If…

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Can you fire a gun in space?

Can you fire a gun in space? Fires can’t burn in the oxygen-free vacuum of space, yet guns can shoot. Modern ammunition carries its own oxidizer, a chemical that will ignite…

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What is an exoplanet?

An exoplanet, or extrasolar planet, is a planet outside our solar system that usually orbits another star in our galaxy. What is an exoplanet? The Sun is the center of our solar…

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Can you blow bubbles in space?

Can you blow bubbles in space? Bubbles are pretty lovely, aren’t they? You may blow bubbles with a unique small wand and watch them float about in the air until… POP ……