Why was the discovery of Einstein’s Cross so important?
A It proved curvatures in space exist by observing light bend through space.
B It was the only quasar to be discovered by a scientist in North America.
C It provided a name for the center of the largest galaxy in the cosmos.
D It proved that all massive galaxies have large black holes at their centers.
The correct answer is A: It proved curvatures in space exist by observing light bend through space.
Einstein’s Cross is significant because it is an example of gravitational lensing, where the light from a distant quasar is bent around a massive galaxy, demonstrating that mass can warp space-time. This observation supports Einstein’s theory of General Relativity, confirming that gravity affects the path of light. Great job on exploring such fascinating topics! If you have more questions or need further clarification, feel free to ask!