Scientists in London are giving the public a glimpse of what they call a very rare sight — a Martian meteorite.

The rock was discovered in Morocco last year. Tests show it likely came from the planet Mars and took more than one-million years to plunge to Earth.

Most meteorites burn up in the atmosphere. And experts say of the tens of thousands that have reached Earth, only 61 came from Mars. They say the dry conditions in the Moroccan desert kept the rock free of contamination.

Scientists at London's Natural History Museum will examine the meteorite inside and out for clues of whether there was ever life on Mars.