Hubble’s Warped Wonderland: Abell 209 Bends Space and Unmasks Dark Matter
Hubble’s latest portrait zooms into Abell 209, a colossal galaxy cluster 2.8 billion light-years away whose gravity bends spacetime itself. Beyond the glittering hundred-plus galaxies lies an invisible stew of X-ray-hot gas and dark matter that outweighs normal matter five to one. Subtle streaks from gravitational lensing reveal how astronomers map this hidden mass, providing [...]
Hubble’s latest portrait zooms into Abell 209, a colossal galaxy cluster 2.8 billion light-years away whose gravity bends spacetime itself. Beyond the glittering hundred-plus galaxies lies an invisible stew of X-ray-hot gas and dark matter that outweighs normal matter five to one. Subtle streaks from gravitational lensing reveal how astronomers map this hidden mass, providing [...] What's Your Reaction?
