But Japanese researchers have made a compelling case that Earth's oceans were once green, in a study published in Nature. The reason Earth's oceans may have looked different in the ancient past is ...

A long-period comet that hasn’t been near Earth for 50,000 years is now visible with the naked eye. The comet known as C/2022 E3 (ZTF) is a dazzling green color chiefly because of the presence ...

Comet C/2022 E3 (ZTF) last passed Earth 50,000 years ago. If you're looking at the night skies Wednesday and make out a tiny green light in the sky, don't panic, aliens haven't landed. A rare ...

Earth's oceans were once green, according to a new study. Carl Sagan, the host of the popular TV show Cosmos, once described Earth as a 'pale blue dot' when explaining an image taken by Voyager 1.

Although chlorophyll is great for photosynthesis in the spectra of light visible to us, PEB seems to be superior in green-light conditions. Before the rise of photosynthesis and oxygen ...

A team of astrophysicists, geoscientists, chemists and life scientists affiliated with a host of institutions in Japan has found evidence that billions of years ago, the Earth's oceans were green.