Space
Cold case: The unsolved mystery of what lit Kepler’s supernova
Astrophile is Joshua Sokol's monthly column on curious cosmic objects, from the solar system to the far reaches of the multiverse
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Astrophile is Joshua Sokol's monthly column on curious cosmic objects, from the solar system to the far reaches of the multiverse
The standard scale for stars' magnetic activity is all tied to a single telescope – and we couldn't observe the sun with it. Now we have a workaround