cosmic

JWST observations reveal a mature quasar at cosmic dawn

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Artist’s impression of the bright core region of a quasar, an active galaxy. The supermassive black hole at the center is surrounded by a bright disk of gas and dust. The dust component can further obscure the view of the interior and shines primarily in the mid-infrared, light that can be analyzed by the James … Read more

The cosmic shrapnel that killed the mammoth is buried deep, scientists claim: ScienceAlert

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For hundreds of thousands of years, the woolly mammoth thrived on Earth, measuring its majestic stride across frozen streams. Then, something happened. The earth changed. And in an extremely short time, the mammoths (Mammuthus primigenius) became extinct, the last of them extinguished 4000 years ago, on the remote Wrangel Island in the cold Arctic north. … Read more