Last summer in the heyday of software defined radio via USB TV tuners we asked hackaday readers a question: Is anyone using everyone’s favorite method of SDR for radio astronomy? It took nearly a year ...

Physicists have found a simple and viable explanation for the diversity observed in galactic rotations. They report that diverse galactic-rotation curves, a graph of rotation speeds at different ...

One point of evidence in support of dark matter is the way in which the speed of stars, gas and dust in a galaxy varies with their distance from the center of the galaxy, known as the galactic ...

Observations of galactic rotation curves give one of the strongest lines of evidence pointing towards the existence of dark matter, a non-baryonic form of matter that makes up an estimated 85% of the ...

Why do some galaxies spin like giant tops, while others appear stationary? This question has puzzled astronomers for decades, and a recent discovery might provide unexpected answers. An international ...

In the battle to describe the motion of galaxies, two models fight head to head. In one corner is dark matter, a strange form of matter that surrounds galaxies, and can be seen only through its ...

Photo by NASA, ESA, R. van der Marel (STScI), and N. Kallivayalil (University of Virginia). Click to galactinate. Well, this is simply too cool: For the first time, astronomers have directly measured ...