First Detection of Helium in an Exoplanet Atmosphere
Scientists say for the first several hundred thousand years or so after the Big Bang, there were virtually only two elements in the universe, hydrogen, and helium. A hydrogen atom is made of only one proton and one electron, and a helium atom has two each of protons, electrons, and neutrons. Hydrogen and then helium are […]
Ultra-Dark Galaxies; Exoplanet With Comet-Like Tail; New Dinosaur Species
Astronomers Find Huge Treasure Trove of Ultra-Dark Galaxies U.S. and Japanese researchers have discovered 854 “ultra dark galaxies” located within the Coma Cluster, about 321 million light years from Earth. Dark galaxies are described as those that are totally composed of or are mostly filled with dark matter, which cannot be seen by telescopes. Nevertheless, […]