The Physics of Martian Meteorites: How Escape Velocity Gets a Rock to Earth
SMRTR summary
In 1996, President Clinton announced that a Martian meteorite called ALH84001 showed potential signs of past life on Mars, confirmed as Martian through trapped atmospheric gases matching Mars' composition. These rocks reach Earth by achieving escape velocity from Mars' surface, requiring speeds that overcome the planet's gravitational field of 3.73 Newtons per kilogram through massive asteroid impacts.
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