Researchers have discovered potentially the oldest evidence of hot water activity on Mars through the analysis of a 4.45 billion-year-old zircon grain from the Martian meteorite known as Black Beauty.

A rock that formed around 4.5 billion years ago on Mars before being blasted into space by a meteor strike and making its way to Earth contains telltale evidence that it was formed in the presence of

Scientists analyzing the 'Black Beauty' meteorite have discovered a zircon grain that hints at hydrothermal systems on early Mars.