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The astro-ph Reader’s Digest

Mapping the Milky Way

How many spiral arms does the Milky Way have? You might be surprised to learn that astronomers are still not completely sure.

Extreme Makeover: Exoplanet Edition

The past 20 years of exoplanet discovery have unveiled many peculiar planets in the Milky Way. Today’s paper investigates if two classes of these odd planets could be the same planet at different points in their evolutionary history – if hot Jupiters can transform into super-Earths!

Stellar Accountants and Alcohol

Low-mass stars are much more common than massive ones. But massive stars outshine the smaller ones a thousand to one! How can astronomers account for this hidden majority? Maybe alcohol will help…

Beyond astro-ph

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