How the Moon Evolved: A Photo Timeline

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Bang! Mars-size body impacts Earth

Credit: NASA/JPL-Caltech
According to a new study, scientists think Earth's moon formed about 95 million years after the first solids condensed in the solar system. Read the…Read More »

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Moon's Age Revealed, and a Lunar Mystery May Be Solved. While there are competing theories, most scientists think that in those early days of the solar system Earth was impacted by a huge, Mars-sized body that spewed debris into orbit around the nascent planet. [See the moon's formation and evolution in this step-by-step infographic.]   Less «
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Miriam Kramer, Staff Writer

Miriam Kramer

Miriam interned at Popular Science, Popular Mechanics and Oak Ridge National Laboratory before coming to She graduated with her degree in journalism from the University of Tennessee after working with the microbiology and anthropology departments. She received her master's in science, health and environmental reporting from New York University. To find out what her latest project is, you can follow Miriam on .
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