A Mysterious Ancient Galaxy Just Rewrote the Universe's Timeline
A disk galaxy in the early universe, just 1.5 billion years after the Big Bang, somehow formed during a time of chaotic cosmic conditions.
Scientists Found More Than 100 Tiny Worlds Hidden in the Solar System
A telescope looking for dark matter discovered 139 new minor planets lurking beyond Neptune's orbit, which could help scientists look for hidden planets in the outer solar system.
An Ancient Black Hole as Heavy as a Billion Suns Is Pointed Right At Us
The blazar—powered by an extremely bright black hole that can blast a hole through galaxies—is the most ancient ever discovered, sending radio signals from the early universe
Scientists Found Breathable Oxygen in Another Galaxy for the First Time
Molecular oxygen is a key component of the air humans breathe, and now astronomers have spotted it a half-billion light years away. But don't hold your breath for quasar whippets.