Observations of a 23 million light-year-long gaseous filament and 39 bursts of radio waves are helping astronomers chart the universe’s largest-scale structures.
Finding out where on the sky these mysterious radio flashes come from is hard. The team behind the discovery of one odd signal has now retracted their claim.
In early dawn on Saturday the 12th, Taurus uses Venus to open his very rare, strikingly brilliant second eye. In the following days the eye slips out of place.
Interstellar comet 3I/ATLAS is streaking across the solar system at more than 220,000 kilometers per hour as you read this. With a little luck, it might just turn up in your telescope this fall.
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