Tag: earliest

Ancient crystals reveal the earliest evidence of fresh water, scientists say

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A new analysis of ancient grains of crystal embedded in rock from the Australian outback suggests Earth had dry land and fresh water some 4 billion years ago — a time when scientists had thought the […]

James Webb Space Telescope spots 3 of our universe’s earliest galaxies

Astronomers using the James Webb Space Telescope have found what they say are three of our universe’s earliest galaxies, spotted actively forming when the cosmos was just 400 million to 600 million years old. In the JWST’s images, this galactic trio resembles fuzzy red smudges feeding on nearby helium and hydrogen.Over millions of years, it […]