Dragonfly 44 - Wikipedia
Dragonfly 44 is an ultra diffuse galaxy in the Coma Cluster. [1][3][2][4] This galaxy is well-known because observations of the velocity dispersion in 2016 suggested a mass of about one trillion solar masses, about the same as the Milky Way.
The Enduring Mystery of the Dragonfly 44 Galaxy
Nov 7, 2022 · Big Old Galaxy. A newly discovered oddity has compounded the mystery. In a paper published in August, van Dokkum’s group found Dragonfly 44 to be extremely ancient, having formed between 10 billion and 13 billion years ago. But such an old galaxy should not be as large as Dragonfly 44 is.
Meet Dragonfly 44, the galaxy made of 99.9% dark matter - WIRED
Aug 25, 2016 · Meet Dragonfly 44, the galaxy made of 99.9% dark matter. The galaxy is roughly the same mass as the Milky Way, but our galaxy has a hundred times more stars. A massive galaxy consisting almost...
Dragonfly 44: The Mystery of a 'Dark Galaxy' - The Atlantic
Sep 30, 2016 · Dragonfly 44 is a dim galaxy, with one star for every hundred in our Milky Way. But it spans roughly as much space as the Milky Way. In addition, it’s heavy enough to rival our own galaxy in...
A galaxy made of 99.9% dark matter | Space - EarthSky
Aug 30, 2016 · Dark galaxy Dragonfly 44. A long exposure with the Gemini Telescope reveals a large, elongated object. To our eyes, Dragonfly 44 appears very faint for its mass.
Dragonfly 44 - A Massive Galaxy That Consists Almost
Aug 25, 2016 · The galaxy, Dragonfly 44, is located in the nearby Coma constellation and had been overlooked until last year because of its unusual composition: It is a diffuse “blob” about the size of the Milky Way, but with far fewer stars.
Astronomers Solve Mystery of a Galaxy Containing 99.99% Dark …
Oct 14, 2020 · The mystery of a galaxy that shouldn't have existed could now have a solution. Dragonfly 44, a faint galaxy that was found in 2016 to consist of 99.99 percent dark matter, has been closely re-examined, revealing a lower and more normal proportion of dark matter.
This mysterious galaxy is almost entirely dark matter
Aug 28, 2016 · First detected in 2015, the galaxy known as Dragonfly 44 seems to be made of 99.99 percent dark matter, an invisible substance known only through its gravitational effects.
This Weird Galaxy Is 99.99 Percent Dark Matter
Aug 26, 2016 · Whatever it may be, about 80 percent of the mass in the universe is dark matter. This dark galaxy, named Dragonfly 44, was first detected in 2015, through the use of the Dragonfly Telephoto...
Dragonfly 44: Ultra-Diffuse Galaxy Made Mostly of Dark Matter
Aug 25, 2016 · Dragonfly 44: Ultra-Diffuse Galaxy Made Mostly of Dark Matter. Astronomers using the W. M. Keck Observatory and the Gemini North telescope have found a galaxy that consists almost entirely of dark matter, the mysterious and elusive substance thought to make up almost a quarter of the Universe.