The International Astronomical Union issued a statement on Monday in response to the U.S. executive order limiting travel from 7 countries. Read it here.
Sirius is easy to find. It's the sky's brightest star on the sky's dome. When you look at it, you're looking backwards along our solar system's path through the Milky Way galaxy.
As seen from Rio de Janeiro, Brazil on January 4, Earth reached its closest point to the sun just 40 minutes before the sun reached its highest daily position in Rio`s sky ...
One journey of our sun and planets around the center of our Milky Way galaxy is sometimes called a cosmic year. That's approximately 225-250 million Earth-years.
When we look up or down - away from the flat disk of the galaxy or toward it - we're seeing Milky Way stars. But we also see a few more distant objects, visible to the eye alone.
Thinking of the ant colony as a superorganism, entomologist Patricia Pietrantonio is searching for the master regulator genes that may help control them.
The EarthSky team has a blast bringing you daily updates on your cosmos and world. We love your photos and welcome your news tips. Earth, Space, Sun, Human, Tonight. Since 1994.
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