There's a false notion that female birdsong is rare in comparison to male birdsong. But lady birds sing, too. You can participate in a new project that aims to collect more recordings of female birds.
Asteroid 2010 WC9 will pass at about half the moon's distance, in one of the closest approaches ever observed of an asteroid of this size. Click in for information about viewing online.
The Keystone, in turn, is your ticket to finding a famous globular star cluster in Hercules, otherwise known as the Great Cluster in Hercules, aka Messier 13 or M13.
In the darkness of the distant universe, galaxies resemble glowing fireflies or flickering candles. This Hubble Space Telescope image shows a massive group of galaxies bound together by gravity: a cluster named RXC J0032.1+1808.
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