EarthSky News - Feb 20 - Do Animals Dream?

February 20 Do Animals Dream? by:

Do animals dream?    Your dog or cat might look as if it's dreaming when its whiskers twitch and legs wiggle. But are animals really dreaming? Today in science: John Glenn On February 20, 1962, John Glenn became the 1st American to orbit Earth and the 1st American space hero. Venus green flash Many try to see a green flash of the sun, but Venus can show one, too, if sky conditions are good ... and if you have a telescope. What is radiocarbon dating? How the steady rate of decay of unstable carbon-14 reveals the ages of some of Earth's oldest inhabitants. Tonight … Somber Betelgeuse in Orion's shoulder Betelgeuse's red color indicates a star well into the autumn of its years. In fact, the star is a magnificently rare red supergiant.

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Venus green flash To see a green flash of Venus, you need a very clear day with no haze or cloud low in the sky, a distant horizon (preferably a sea horizon) and a telescope! Photo by Colin Legg.

Somber Betelgeuse in Orion's shoulder It won't be long before Orion disappears for another season. Catch Betelgeuse and its constellation tonight. Submit your photo to EarthSky here!

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