Finding Neptune: How We Discovered the Eighth Planet

02/18/2022

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NEWS & FEATURES

Neptune: NASA/JPL-Caltech/Kevin M. Gill. sun Illustration: Tatyana Antusenok/Dreamstime Finding Neptune: How we discovered the eighth planet This ice giant hid from humanity’s view for millennia. But eventually, its sibling planet gave it away. READ MORE

John Fisanotti How we learned the shape of the Milky Way To understand the nature of our galaxy, astronomers had to look to distant island universes. READ MORE

Alan Dyer Astronomy's tips for winter observing Trekking out to your favorite observing spot requires a little extra planning this time of year. But the views are totally worth it. READ MORE

Peakstock/Shutterstock The beginner’s guide to buying a used telescope There are a few things to watch out for when purchasing a used scope READ MORE

askastro Ask Astro: How much of the universe can we observe? What is the difference between the observable universe and the whole universe? READ MORE

OBSERVING

Charles (Chuck) Peterson (Flickr) The sky this week Your daily digest of celestial events coming soon to a sky near you. READ MORE

PICTURE OF THE DAY

Fabian Rodriguez Frustaglia from Perth, Australia Sailing away The Sailboat Cluster, also known as NGC 225, lies in the constellation Cassiopeia the Queen. It lies approximately 2,100 light-years from Earth. VIEW NOW

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