Curiosity Rover Discovers Evidence of Ancient Carbon Cycle on Mars

NASA's Curiosity rover has found significant amounts of the iron carbonate mineral siderite in rock samples from Gale Crater on Mars. This discovery suggests that the planet once had a warm and wet climate capable of supporting liquid water and potentially life. The presence of siderite indicates that Mars had a carbon cycle similar to Earth's, where carbon dioxide from the atmosphere reacted with minerals to form carbonates. This finding provides crucial insights into the planet's climatic history and its potential habitability.

For more detailed information, you can refer to the original article: NASA rover finds fresh evidence of the warm and wet past of Mars.