Astronomers Say They Have Spotted the Universe’s First Stars
Theory has it that “Population III” stars brought light to the cosmos. The James Webb Space Telescope may have just glimpsed them.
Brightest-Ever Space Explosion Reveals Hints of Dark Matter
A recent gamma-ray burst known as the BOAT — “brightest of all time” — appears to have produced a high-energy particle that shouldn’t exist. For some, dark matter provides the explanation.
Webb Space Telescope Snaps Its First Photo of an Exoplanet
The grainy image of a “super-Jupiter” is a sign of what’s to come as the telescope’s exoplanet observations ramp up.
Two Weeks In, the Webb Space Telescope Is Reshaping Astronomy
In the days after the mega-telescope started delivering data, astronomers reported new discoveries about galaxies, stars, exoplanets and even Jupiter.
Black Hole Image Reveals the Beast Inside the Milky Way’s Heart
In 2019, the Event Horizon Telescope released a historic image of a supermassive black hole in another galaxy. The follow-up — an image of Sagittarius A* — shows it shimmering at the center of our own.
Secrets of the Moon’s Permanent Shadows Are Coming to Light
Robots are about to venture into the sunless depths of lunar craters to investigate ancient water ice trapped there, while remote studies find hints about how water arrives on rocky worlds.
Solving the Faint-Sun Paradox
We might have a past faint sun to owe for life’s existence. This has consequences for the possibility of life outside Earth.
Researchers Revise Recipe for Building a Rocky Planet Like Earth
Over the past decade, researchers have completely rewritten the story of how gas giants such as Jupiter and Saturn form. They’re now debating whether the same process might hold for Earth.
A Hint of Dark Matter Sends Physicists Looking to the Skies
After a search of neutron stars finds preliminary evidence for hypothetical dark matter particles called axions, astrophysicists are devising new ways to spot them.