Astronomy
Where Aliens Could Be Watching Us
More than 1,700 stars could have seen Earth in the past 5,000 years.
The Universe Has Already Made Almost All the Stars It Will Ever Make
Black holes are cosmic dimmers.
My Personal Quest to Study Supernovae on Mars
Overcoming sexist naysayers and self-doubt in astrophysics.
Astronomers Find Secret Planet-Making Ingredient: Magnetic Fields
Scientists have long struggled to understand how common planets form. A new supercomputer simulation shows that the missing ingredient may be magnetism.
Squishy Neutron Star Setback Dampens Hopes of Exotic Matter
Groundbreaking results show that neutron stars of different masses may have the same size—upending astrophysical models.
A Wrinkle in Nature Could Lead to Alien Life
There may be more than one way to tune a universe for life.
New Kind of Space Explosion Reveals the Birth of a Black Hole
A supernova-like explosion dubbed the Camel appears to be the result of a newborn black hole eating a star from the inside out.
Comets Are More Dangerous Than We Thought
Could a comet, not an asteroid, have killed the dinosaurs?
If Aliens Exist, Here’s How We’ll Find Them
Two esteemed astrophysicists peer into the future of space exploration.
The Alien-Haunted World
Are space scientists too conservative and close-minded about the possibility that ET exists?
