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At first, not many scientists agreed with the Alvarezes’ theory. Then, in 1990, geologists looking for oil off Mexico’s coast discovered a huge impact crater. It was buried under a mile of limestone. Underground imaging equipment showed that the crater fit the Alvarezes’ theory. It is exactly the right size and formed at exactly the right time to support their idea. | Meteors and Moon Rocks | Kids Discover

At first, not many scientists agreed with the Alvarezes’ theory. Then, in 1990, geologists looking for oil off Mexico’s coast discovered a huge impact crater. It was buried under a mile of limestone. Underground imaging equipment showed that the crater fit the Alvarezes’ theory. It is exactly the right size and formed at exactly the right time to support their idea. | Meteors and Moon Rocks | Kids Discover

7 Ideas to Teach Students about Moon Phases — The Science Penguin

7 Ideas to Teach Students about Moon Phases

Not all rock formations are above ground. New Mexico’s Carlsbad Caverns began forming just before the time of the dinosaurs. Over millions of years, natural acids in water ate away at cracks in the underground limestone structure. The limestone was eroded, and cave-ins helped form giant underground chambers. One is called the Big Room. It’s 25 stories high and a third of a mile wide. | Ayers and Other Famous Rocks | Kids Discover

Not all rock formations are above ground. New Mexico’s Carlsbad Caverns began forming just before the time of the dinosaurs. Over millions of years, natural acids in water ate away at cracks in the underground limestone structure. The limestone was eroded, and cave-ins helped form giant underground chambers. One is called the Big Room. It’s 25 stories high and a third of a mile wide. | Ayers and Other Famous Rocks | Kids Discover

Planets For Kids Website - Solar System Facts and Astronomy. Free website full of videos, pictures, lessons, and more!

Planets For Kids Website - Solar System Facts and Astronomy. Free website full of videos, pictures, lessons, and more!

Scientists don’t know exactly what lies beneath the Moon’s hard outer crust. They think the Moon has a mantle, made of dark rock. Under that is an area of partly molten rock, or hot liquid rock. Finally, there’s a small core probably made of iron. | Geography of the Moon | Kids Discover

Scientists don’t know exactly what lies beneath the Moon’s hard outer crust. They think the Moon has a mantle, made of dark rock. Under that is an area of partly molten rock, or hot liquid rock. Finally, there’s a small core probably made of iron. | Geography of the Moon | Kids Discover

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