Last week, scientists announced the 1st known source for ghostly, high-energy neutrinos. The source is a blazar, a billion-solar-mass black hole 3.7 billion light-years away. The discovery establishes a new way to study the universe.
Some Northern and some Southern Hemisphere photos of Mercury from Saturday night. Watch this post, as we'll be adding moon and Venus pics from around the world today.
This near-Earth asteroid swept by Earth in late June. Turns out, it’s a double asteroid, with both bodies almost identical in size and not touching. It's only the 4th such object ever detected.
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