Galaxy With Missing Dark Matter Challenges Understanding of Universe
Researchers at Yale University have discovered a galaxy with no dark matter.
The groundbreaking discovery, published in the journal Nature, changes fundamental assumptions on the construction of the universe.
The finding confirms that dark matter could be a separate material in the universe and not, as some theories say, a kind of by-product of traditional matter being impacted by the massive force of gravity on a cosmic scale.
Watch the video, which provides fascinating details on the new discovery, and identifies the baffling galaxy.
“We thought that every galaxy had dark matter and that dark matter is how a galaxy begins,” said Pieter van Dokkum, Yale’s Sol Goldman Family Professor of Astronomy.
“This invisible, mysterious substance is the most dominant aspect of any galaxy,” van Dokkum said, according to a Yale University statement on March 28.
“So finding a galaxy without it is unexpected. It challenges the standard ideas of how we think galaxies work, and it shows that dark matter is real. It has its own separate existence apart from other components of galaxies. This result also suggests that there may be more than one way to form a galaxy.”
The ghostly galaxy was located using the Dragonfly Telephoto Array, a telescope van Dokkum invented and built with co-author of the study Roberto Abraham of the University of Toronto.