http://naturemagazin.com/wp-content/uploads/2017/05/Ancient-Galaxies-Have-Very-Little-Dark-Matter.jpg

Ancient Galaxies Have Very Little Dark Matter

Ancient Galaxies Have Very Little Dark Matter younger spiral Ancient Galaxies Ancient Galaxies  New observations by an international team of astronomers’ show that huge galaxies created some 10 billion years ago, during a peak in galaxy formation, were comprised of mostly baryonic or normal matter and very little of the mysterious dark matter that tends to dominate much younger galaxies and cool galaxies The astronomers led by Germany’s Max Planck Institute for Extraterrestrial Physics made their findings after measuring the rotation of six massive and distant star-forming Ancient Galaxies. younger spiral Ancient Galaxies Using the European Southern Observatory’s (ESO) Very Large

Continue reading »

Saturn in Infrared from Cassini | NASA

Saturn in Infrared from Cassini Image Credit: NASA, JPL-Caltech, SSI.   Explanation: Many details of Saturn appear clearly in infrared light. Bands of clouds show great structure, including long stretching storms. Also quite striking in infrared is the unusual hexagonal cloud pattern surrounding Saturn’s the North Pole. Each side of the dark hexagon spans roughly the width of our Earth. The hexagon’s existence was not predicted, and its origin and likely stability remain a topic of research. Saturn’s famous rings circle the planet and cast shadows below the equator. The featured image was taken by the robotic Cassini spacecraft in 2014

Continue reading »