How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

Based on the new model, the first of these white dwarf explosions isn’t due for at least 10 1100 years. That’s a 1 followed by 1,100 zeros—a number so big that we don’t have a name for it.

James Webb’s mid-infrared vision has likely captured a frigid, Saturn-mass planet shaping the dusty rings around the nearby ...

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