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Clues

New Clues to Mysterious Formation of Hot Jupiter Exoplanets

An artist’s concept of a “hot Jupiter” extrasolar planet. Credit: NASA/JPL-CaltechAstronomers discover a new way of determining the relative age of exoplanets and prove there are multiple ways these planets form.In our solar system,…

Plate tectonics clues found in ancient crystals

A view of the the ancient Barberton Greenstone Belt in South Africa, where the zircon crystals were discovered. The crystals provide evidence that plate tectonics on Earth began about 3.8 billion years ago. Image via Nadja Drabon/ AGU.…