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CosmosUp | November 23, 2019

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Galaxy Archives - Page 2 of 3 -

Galactic ‘Rain’ could Slow Down Birth of Stars, New Study Found

March 5, 2015 |

Some of the galaxies in our universe are veritable star nurseries. For example, our own Milky Way produces, on average, at least one new star every year. Others went barren years ago, now producing few if any new stars. Why that happens is a question that has dogged astronomers for years. Read More

Astronomers Discovered Ancient Dusty Galaxy That Shouldn’t Exist

March 3, 2015 |

Many people change a lot after their youth… and so to did our Universe. Nowadays, galaxies contain both dust and gas, but back in the early Big-Bang days, the earliest galaxies had no dust, only gas. Now, A team of astronomers, led by Darach Watson, from the University of Copenhagen used the Very Large Telescope‘s X-shooter instrument along with the Atacama Large Millimetre/submillimetre Array (ALMA) to observe one of the youngest and most remote galaxies ever found. Read More

Astronomers Captures Best-Ever 3-D Image of the Universe

February 28, 2015 |

Over 10 days in December 1995, the Hubble Space Telescope took 342 images of the same tiny patch of sky in the constellation Ursa Major. The resulting data set, the Hubble Deep Field, revolutionized the study of the early universe by revealing the profusion of galaxies in that faint and distant era when the first galaxies were forming. Read More

Devastating Black Hole ‘Storm’ Observed in Galaxy’s Core

February 12, 2015 |

Astronomers studying an otherwise “boring” galaxy over a billion light-years from Earth have been surprised to see a powerful storm erupt from its core, an event that will quench any new star formation in the foreseeable future.
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New Study Explain Why Some Galaxies Die Young

February 2, 2015 |

A new study has revealed that some galaxies can die early because the gas they need to make new stars is suddenly ejected. Most galaxies stop growing when they run out of raw materials over billions of years. However, some galaxies seem to die young when they shoot out the gas they need early on. Read More

Astronomers ‘Play God’ by Creating an Entire Universe

January 12, 2015 |

For several years, astronomers have tried to develop the computer-simulated models of the Universe; but without the desired success. The galaxies formed in computer simulations were typically extremely massive, sometimes too small or too old. The computers would generate galaxies of very spherical shape; which haven’t been observed. Read More

Andromeda Galaxy had a much more Violent History than Milky Way

January 10, 2015 |

To a distant observer, our own Milky Way and the Andromeda galaxy would probably look very similar. Although Andromeda is longer, more massive, and more luminous than the Milky Way, both galaxies are vast spirals composed of hundreds of millions of stars. Read More

Two Black Holes could Soon Merge and Destroy Their Galaxy

January 9, 2015 | 1

The central regions of many glittering galaxies, our own Milky Way included, harbor cores of impenetrable darkness—black holes with masses equivalent to millions, or even billions, of suns. What is more, these supermassive black holes and their host galaxies appear to develop together, or “co-evolve.” Theory predicts that as galaxies collide and merge, growing ever more massive, so too do their dark hearts. Read More

A Dwarf Galaxy, Milky Way’s New Neighbour, May Tell Us Things about the Universe

December 23, 2014 |

The Milky Way, the galaxy we live in, is part of a cluster of more than 50 others that make up the ‘Local Group’, a collection that includes the famous Andromeda Galaxy and many other far smaller objects. Now a Russian-American team have added to the canon, finding a tiny and isolated dwarf galaxy almost 7 million light-years away. Read More

Strange and Rare Galaxy Puzzled Astronomers

December 3, 2014 |

A team of astronomers has found an important new example of a very rare type of galaxy that may yield valuable insight on how galaxies developed in the early Universe. The new discovery technique promises to give astronomers many more examples of this important and mysterious type of galaxy. Read More

“Eye of Sauron” Helps Astronomers Measure Cosmic Distances

November 29, 2014 |

The universe is vast, making it extremely difficult to measure distances between heavenly bodies. Currently, the most common method can measure relative distances, but researchers from the Niels Bohr Institute at the University of Copenhagen, the University of Southampton, and the Kyoto Sangyo University have found another way thanks to “Eye of Sauron.” Read More

Astronomers Find Cluster of Quasars Aligned Perfectly Across Billion Light Years

November 22, 2014 |

Quasars are the most luminous objects in the universe, beacons that shine across vast cosmological distances. They are galaxies that have particularly active supermassive black holes at their cores, objects surrounded by discs of extremely hot matter spiralling into oblivion and emitting bright beams of particles along their spin axes at nearly the speed of light. Read More

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