How Can The Gravity Of A Galaxy Bend Light Around Itself?

💡 The Answer

• This phenomenon, gravitational lensing, occurs because mass curves spacetime around it.
• Light follows the curvature, creating magnified and distorted images of background objects.
• It allows astronomers to see distant galaxies and map dark matter by its gravitational effects.
• Einstein rings are a perfect example where a background galaxy is lensed into a full ring.