Sky & Telescope December 2022 Magazine
In the December 2022 issue of Sky & Telescope, we’re on the hunt for the first white dwarf star. While many think Sirius B was the first one to be discovered, that honor actually goes to 40 Eridani. But astronomers knew about Sirius B and 40 Eridani long before they found out about white dwarfs — so the real question is, how did they uncover the true nature of these stars? Plus, astronomers are looking into what stars’ activity means for their exoplanets. Does a more active star produce life or prevent it? And what does that mean for the search for extraterrestrial lifeforms? Then, S&T Science Editor Camille M. Carlisle gives us the low-down on the first image of our galaxy’s central black hole.
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