Fossils of a 70 million-year-old platypus relative called Patagorhynchus pascuali found in South America show that egg-laying mammals evolved on more than one continent.
Scientists watched as a three-quasar system merged in a supercomputer simulation of the universe to birth a black hole 300 billion times as massive as the sun.
A young child had the remnants of her absorbed twin removed from her head.
Astronomers spotted a massive coronal mass ejection (CME) expanding its ethereal wings as it barrelled out of the sun and toward Mercury.