Cassandra Hatton, Sotheby's Vice President of Science and Natural History, emphasized the rarity of the find. "This is the largest piece of Mars we have ever found by a long shot," she said, according ...

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the astronomers said. A gaseous disk surrounding the young star is the first stages of ...

Astronomers have discovered the earliest seeds of rocky planets forming around a baby sun-like star, an unprecedented snapshot of "time zero," when new worlds begin to gel.