New findings explain the Phoenix cluster's mysterious starburst. Data confirm the cluster is actively cooling and able to generate a huge amount of stellar fuel on its own.

From the daily newsletter: a doctor goes to Mars. Plus: investigating celebrity yearbooks; Merve Emre on friendship books; ...

Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected could ...

Researchers believe they have rediscovered a mysterious star system first spotted in 2011. If true, the alien sun and its ...