The natural history-themed sale on Wednesday features a 54-pound hunk of Mars estimated at $2 million to $4 million.

As the second most complete skeleton in existence, the “beautifully mineralized” fossil bones give the rare object and piece of natural history a rich, grey-black color. Made up of 139 bone elements, ...

Sotheby's "Geek Week" auction in New York showcases a diverse collection of rare and significant items. Highlights include a ...

On Wednesday, Sotheby’s will auction off a chunk of rock believed to have originated on Mars for an anticipated two to four ...

A giant rock from Mars and a Jurassic-era dinosaur skeleton are set to go under the hammer at Sotheby’s this week.

NWA 16788 was discovered in Niger & is assumed to have travelled 140 million miles to reach Earth. Weighing 24.67 kg, the ...