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Astronomers Trace Radio Burst to Extreme Cosmic Neighborhood
A mysterious object that repeatedly bursts with ultra-powerful radio waves must live in an extreme environment — something like the one around a supermassive black hole.
Earliest Black Hole Gives Rare Glimpse of Ancient Universe
It weighs as much as 780 million suns and helped to cast off the cosmic Dark Ages. But now that astronomers have found the earliest known black hole, they wonder: How could this giant have grown so big, so fast?
Hidden Supercluster Could Solve Milky Way Mystery
Astronomers generally stay away from the “Zone of Avoidance.” When one astronomer didn’t, she found a giant cosmic structure that could help explain why our galaxy moves so fast.
Deathblow Dealt to Dark Matter Disks
New data tracking the movements of millions of Milky Way stars have effectively ruled out the presence of a “dark disk” that could have offered important clues to the mystery of dark matter.
‘Crazy’ Supernova Looks Like a New Kind of Star Death
Astronomers are mystified by a strange star explosion in a distant galaxy that might be a relic from an earlier cosmological era.
From the Edge of the Universe to the Inside of a Proton
The Zoomable Universe, a new book by the astrobiologist Caleb Scharf, the illustrator Ron Miller and 5W Infographics, tours the universe’s 62 orders of magnitude.
Neutron-Star Collision Shakes Space-Time and Lights Up the Sky
Astronomers have for the first time matched a gravitational-wave signal to a kilonova’s burst of light, observations that will “go down in the history of astronomy.”
Ultra-Powerful Radio Bursts May Be Getting a Cosmic Boost
Repeating radio bursts are among the most mysterious phenomena in the universe. A new theory explores how some of their puzzling properties can be explained by galactic lenses made of plasma.
For Astronomers, Neutron Star Merger Could Eclipse Eclipse
Even as the solar eclipse was mesmerizing millions, astronomers were training their space- and land-based telescopes on a far more violent astrophysical event.