Formation of Mars: Birth of the Red Planet

Approximately 4.5 billion years ago, Mars formed through accretion of cosmic material in the solar nebula. Evidence from Martian meteorites, including zircon crystals dating to 4.45 billion years ago, indicates Mars developed quickly but never grew large enough to maintain long-term geological activity. Evidence suggests Mars had liquid water, a denser atmosphere, and active hydrothermal systems from its beginning. The planet developed a hemispheric dichotomy with northern lowlands and heavily cratered southern highlands, possibly from a massive impact around 4.5 billion years ago. Mars' early water-rich environment may have created habitable conditions.