Fraser Cain on Nostr: Mars formed 4.5 billion years ago, roughly the same time as the Earth. We know that ...

Mars formed 4.5 billion years ago, roughly the same time as the Earth. We know that water was stable on Earth since about 4.3 billion years ago, but when was it present on Mars? Researchers investigated a meteorite that originated from Mars and found zircon crystals that date back to 4.45 billion years ago. They believe this could be the oldest evidence for water on Mars. And not just water, but hot water welling up from hydrothermal systems beneath the surface.

https://theconversation.com/a-4-45-billion-year-old-crystal-from-mars-reveals-the-planet-had-water-from-the-beginning-243172