Galaxy NGC 4845

Galaxy NGC 4845 Hubble Space Telescope NASA/ESA

Galaxy NGC 4845 Hubble Space Telescope NASA/ESA This NASA/ESA Hubble Space Telescope image shows the spiral galaxy NGC 4845,located over 65 million light-years (estimated) away in the constellation of Virgo (the Virgin). The galaxy’s orientation clearly reveals the galaxy’s striking spiral structure, a flat and dust-mottled disk surrounding a bright galactic bulge. NGC 4845‘s glowing midpoint hosts a gigantic version of a Black Hole, known as a supermassive Black Hole. The presence of a Black Hole in a distant galaxy like Galaxy NGC 4845 can be inferred from its effect on the galaxy’s innermost stars, these stars experience a strong

Continue reading »
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 »

Stars fleeing a cosmic crash | ESA/Hubble & NASA

Stars fleeing a cosmic crash Astronomical pictures sometimes deceive us with tricks of perspective. Right in the centre of this image, two spiral galaxies appear to be suffering a spectacular collision, with a host of stars appearing to flee the scene of the crash in a chaotic stampede. However, this is just a trick of perspective. It is true that two spiral galaxies are colliding, but they are millions of light-years away, far beyond the cloud of blue and red stars near the merging spiral. This sprinkling of stars is actually an isolated, irregular dwarf galaxy named ESO 489-056. The dwarf galaxy is

Continue reading »