Tag: Milky Way Galaxy

Unknown Milky Way Signal –“A Gravitational Wave, Cosmic String, or Primordial Black Hole?”

In 1993 Stephen Hawking proposed in Black Holes and Baby Universes that there might be “primordial black holes which were formed in the early universe that could be less than the size of the nucleus of an atom, yet their mass could be a billion tons, the mass of Mount Fuji. A black hole weighing […]

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“A Surprise Almost as Old as the Universe” –Hubble Detects Invisible Mass of Small Black Holes at Globular Cluster Core

  Hubble astronomers found something extraordinary at the heart of nearby globular cluster NGC 6397 –a concentration of smaller black holes lurking there instead of one monster, supermassive black hole. Ancient stellar jewelry boxes, globular star clusters are densely packed objects, glittering with the light of a million stars in a ball only about 100 […]

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“Vast Dark Matter Halos” –Ancient Dwarf Relic Reveals First Galaxies More Massive than Thought

Our sun is travelling around the center of the Milky Way at 220 kilometers per second, says Gerry Gilmore with the Institute of Astronomy at the the University of Cambridge, referring to the fact that our Milky Way Galaxy lies inside a sphere, or “halo”, of dark matter that extends out far beyond the luminous […]

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“Against All Odds” –NASA’s Planet-Hunting Tess Discovers a Unique Star System with Six ‘Suns’ (Weekend Feature)

“The system exists against the odds,” said Brian Powell, a data scientist at NASA’s High Energy Astrophysics Science Archive Research Center about the source of starlight that was mysteriously brightening and dimming some 1,900 light-years away. The source, named TIC 168789840, is a system of three pairs of binary stars: three different stellar couplets revolving […]

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Titanic Explosion in Andromeda –A Prelude? (Weekend Feature)

So far, our Milky Way Galaxy has only had close calls from gamma ray explosions so large, scientists have suggested, that if they occurred within our galaxy they could potentially trigger mass extinctions on Earth. In 2014, telescopes around the world pointed to our neighboring Andromeda galaxy (above) looking in all wavelengths of light to […]

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“Beyond the Edge of the Milky Way” –Dark Energy Probe Hints at an Enormous Invisible Halo of Dark Matter

One early result of the ongoing Dark Energy Survey is the previously untold story revealed by old, giant RR Lyrae pulsating stars, which tell scientists about the region of space beyond the edge of our Milky Way. In this area nearly devoid of stars–the motion of the RR Lyrae stars hints at the presence of […]

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“Beyond the Edge of the Milky Way” –Dark Energy Probe Hints at an Enormous Invisible Halo of Dark Matter

One early result of the ongoing Dark Energy Survey is the previously untold story revealed by old, giant RR Lyrae pulsating stars, which tell scientists about the region of space beyond the edge of our Milky Way. In this area nearly devoid of stars–the motion of the RR Lyrae stars hints at the presence of […]

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“The Red Mirage” –Oldest Planets in the Universe May Suffer Early Heat Death Killing Chance of Life

In the Milky Way Galaxy, about three-fourths of the stars are M dwarfs, and the proportion is even higher in elliptical galaxies. But there’s a deadly catch. New research indicates orbiting close to these low-mass stars, prime targets for astronomers in the search for extraterrestrial life, may have lost their window of opportunity at hosting […]

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“Approaching Science Fiction” –The Search for Dark-Matter Planets & Massive Structures (Weekend Feature)

Ever since astronomers reached a consensus in the 1980s that invisible “dark matter” binds galaxies together and gravitationally shapes the cosmos — experimentalists have hunted for the elusive nonluminous particles. Without luck.  “The nature of dark matter is one of the biggest mysteries in science and we need to use any related new data to […]

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Gaia Space Observatory Scans the Galaxy –“Reveals Our Solar System’s 230 Million-Year Milky Way Orbit is Speeding Up”

“Gaia is measuring the distances of hundreds of millions of objects that are many thousands of light years away, at an accuracy equivalent to measuring the thickness of hair at a distance of more than 2000 kilometers. “These data are one of the backbones of astrophysics, allowing us to forensically analyze our stellar neighborhood, and […]

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