The rock has also caught the attention of the Perseverance team, of course, who called it "unlike any seen on Mars before ...

Freya Castle is not the only remarkable discovery during Mars missions. This year, the Curiosity rover uncovered pure ...

In September, NASA's Perseverance rover captured images that have stirred up fascination and debate, with some formations ...

with the US space agency stating it is "unlike any" debris seen on Mars before. The object of this fascination is a black and white striped rock, dubbed 'Freya Castle' or "zebra rock".

Because Freya Castle is a loose stone and clearly does not match Mars' underlying bedrock, NASA experts believe it may have come from somewhere else - perhaps having rolled downhill from a source ...

Like other interesting formations on Mars, the ground team here on Earth gave the rock a name: Freya Castle. Freya Castle isn't very large; it's about 20 centimeters (8 inches) across, a little bit ...

NASA's Perseverance rover discovered a strange rock on Mars called "Freya Castle", which is nothing like they have ever seen. The rock, which is only 7.9 inches (20 cm) across, is covered in black ...

Amid the mundane pebbly terrain of Mars' surface, NASA's Perseverance rover recently ... Engineers initially nicknamed the object "Freya Castle" for a summit at the Grand Canyon and planned a closer ...