6 Earth secrets revealed by meteorites and comets: Earth's age, life seeding, water delivery, extinction links, internal structure, and resource creation.

6 Earth secrets revealed by meteorites and comets: Earth's age estimated at 4.54 billion years old from meteorite data; simple organic compounds from space may have seeded life; water delivery from meteorites formed oceans and atmosphere; extinction events like dinosaur demise linked to impacts; Earth's internal structure understood through studying meteorites; meteorites have created natural resources like gold and nickel.