Bending Light With Gravity
Most recent answer: 10/07/2015
- Vince (age 41)
Boynton Beach, FL
In fact the light always moves toward the center of the star, or galaxy. This effect will cause what is called an "Einstein ring" .
Take a look at for a nice explanation. There are lots of nice astronomical photos there such as this one:
True, but your idea about the effect of gravity on space causing light to have to travel farther is in fact exactly part of the General Relativistic picture. It accounts for half of the curvature of light passing the star. It causes curvature on the approach and departure, while the more familiar type of gravitational effect causes curvature mostly near the closest approach. So it's pretty cool you guessed something along those lines. Mike W.
(published on 10/07/2015)