Add Yahoo as a preferred source to see more of our stories on Google. Spiral galaxies, like Messier 77 shown here, helped astronomers learn about the existence of dark matter. NASA, ESA & A. van der ...
Most of the matter in our universe is invisible. We can measure the gravitational pull of this “dark matter” on the orbits of stars and galaxies. We can see the way it bends light around itself and ...
If a new research paper’s theory is correct, then there should be a much higher population of very small, very luminous galaxies in the early universe. With everything we learn about the nature of ...
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