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Tuesday, January 8, 2019

Jan 8 - Io's Fiery Volcanoes

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This is Io, a moon of the giant planet Jupiter. The red dots are active volcanoes on its surface. December 21, 2018, image via the NASA's Juno spacecraft.

New Juno images of Io's fiery volcanoes

Jupiter's moon Io is the most volcanically active world in our solar system. The Juno spacecraft - now orbiting Jupiter - has now gazed across a distance to acquire new images and insights about the "fires of Io." Read more.

Why are moths attracted to flame?

Moths - and many other flying insects - are probably more disoriented by a close light source than they are attracted to it. Read more.

Capella is 2 golden stars

We see Capella as the brightest star in the constellation Auriga the Charioteer.  It's really 2 stars, each with a golden color similar to our sun. Read more.

A star is born … and then planets

Take 2 minutes to learn about the life and death of a solar system in this new video from NASA. Watch.

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Tonight … See a faint star cluster near bright Sirius

Sirius is easy to find. It's the sky's brightest star, and Orion's Belt points to it. If you have binoculars and a dark location, look near it for the star cluster M41. Read more.

Tonight … Look for Cassiopeia and the Big Dipper

Watch the celestial clock and its 2 great big hour hands - Cassiopeia and the Big Dipper - as they swing around the North Star every night! Read more.
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