![Artist rendering of the exoplanet WASP-107b transiting its highly active K-type main sequence star. (ESA/Hubble, NASA, M. Kornmesser)](https://blogs.voanews.com/science-world/files/2018/05/heic1809a-276x207.jpg)
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 […]
![A color image made with B, R, and i-band images from the Subaru Telescope. A small region of 6 x 6 arcmin is cut out from large Coma Cluster images. Yellow circles show two of the 47 dark galaxies discovered last year, and green circles are the ones discovered in this new study. Image without the labels is here, image without the labels and circles is here. (Credit: NAOJ)](https://blogs.voanews.com/science-world/files/2015/06/fig1-1-276x207.jpg)
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, […]