Astronomers have long thought supermassive black holes can escape their home galaxies — now they've found one roaming its host's galactic outskirts.

The post Wandering Supermassive Black Hole Found at the Edge of its Galaxy appeared first on Sky & Telescope.

Exploding stars have left their radioactive mark on our planet. Now scientists have found more evidence of a particularly violent event in Earth’s more ancient past.

The post Exploding Stars Sprinkled Ancient Earth With Radioactive Iron and Plutonium appeared first on Sky & Telescope.