Our trillion-galaxy universe
Astronomers have learned that their previous estimate of the number of galaxies in the universe was slightly off – by more than 1 trillion.
Making sense of the exoplanetary zoo
Astronomers see a menagerie of planetary systems orbiting other stars, but they’re just beginning to figure out how these structures arise.
The astronomy community is preparing for the big one: a spectacular 3-D map of the entire galaxy.
Explore Centaurus’s deep-sky treasures
From stars and star clusters to galaxies and galaxy clusters, this constellation will keep you observing all spring.
Moonwalkers and women scientists highlighted at Starmus IV
The famous festival will take place in Trondheim, Norway, this month, showcasing science, music, and a celebration of life.
25 hot eclipse products
Viewing the eclipse safely doesn’t have to break the bank.
Sky this Month
StarDome and Path of the Planets
In Every Issue