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4 billion year old crystals provide clues to when plate tectonics began and set the stage for life on earth

4 billion year old crystals provide clues to when plate tectonics began and set the stage for life on earth

Artist’s illustration of uninhabitable conditions during Hadean, an early geological eon of Earth’s history. Credit: Alec Brenner Zircons (and the secrets they have) are forever Scientists have long known that plate tectonics, the motion of distinct, rigid plates that make up the earth’s crust, formed continents and mountains, were crucial to the evolution of the …

4 billion year old crystals provide clues to when plate tectonics began and set the stage for life on earth Read More »

Astronomers caught Betelgeuse just before it began to fog and may have seen a pressure wave rippling through its atmosphere

Astronomers caught Betelgeuse just before it began to fog and may have seen a pressure wave rippling through its atmosphere

A couple of years ago, Betelgeuse created a lot of interest when it started to get dark. It captured astronomers around the world, who were trying to understand what was happening. Was it about to become supernova? Evidence showed that dust was the most likely culprit for the red supergiant’s downgrade, although there are still …

Astronomers caught Betelgeuse just before it began to fog and may have seen a pressure wave rippling through its atmosphere Read More »