The Astronomy Journal

A breakthrough spectroscopic analysis reveals a secondary atmosphere continuously replenished by volcanic outgassing.

Astronomers have found a rapidly growing black hole hidden inside a dense gas cocoon, solving a mystery about early cosmic objects.

Recent combined observations confirm Terzan 5 is a surviving relic from our galaxy's earliest formation period.

A quick look at the most mind-bending realities of our universe, from time travel to the emptiness of space.