False-color image of Ceres - largest body in the asteroid belt - from the Dawn spacecraft. The image shows Ceres' famous bright spots, and the false color highlights differences in surface materials. Image via NASA PhotoJournal.
Earlier this month, scientists announced that dwarf planet Ceres has more carbon-rich organics than previously thought, both on and below its surface. Here's why that's exciting.
Dog Star Sirius reaches its highest point in the sky around midnight every New Year. For this reason, it might also be called the New Year's star. Read more.
A fast-moving comet, C/2018 Y1 (Iwamoto), is headed toward a late January/early February encounter with the sun and Earth. It might soon be within reach of binoculars and small telescopes. Read more.
Although not as famous as the Southern Cross, the Northern Cross is pretty easy to spot. It’s a large, noticeable star pattern shaped like a cross. Read more.
Wow! Huge thanks to the EarthSky community for all the images you've contributed this year. Among the most popular in 2018 is this one by Neeti Kumthekar in Belmar, New Jersey. Neeti caught the January 2018 supermoon rising with a mirage effect. More photos here.
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