Astrophysics Cosmic Light, Quasars Einstein Ring - Cross

[Kenzofeis]

A we all know, when light are leaving some place going towards another galaxy it always emits in 4 beams because it thinks it's much cooler to be seen as a cross or 4 arcs on the other side.

[CACBCCCU]

Imagine a gravity lens made out of a rotating ring of black holes or, wilder yet, a black hole shaped like a bicycle tire, sort of the opposite of a wormhole, I guess. Light can go through the middle of the lens for once is the point here. So anyway, it's still a lens, but now it is unblocked in the middle and has a uniquely-straight shortest path shorter than the ring. So, I guess that means it really is the light bending, and not the space.

[nickharvey7]

Interesting video!

[gorilamunch]

there is no "reflection" of light u nub only bending. Think of a ball on a rubber sheet. It warps the sheet downwards where the ball is. If light comes from a distant source in a straight line and passes through the edges of this "crevace" then it will moving towards the center until it escapes this "warp of spacetime". Think of a marble rolling down an inverted cone not straight down but if u roll it along the edge. Its hard to explain but u know what i mean

[EPISTEMESCIENTIA]

@gorilamunch really? and you can verify this experimentally? Have any citations?

[marfeb06]

yeeah sureha ha

[piratelord99]

this means that the gravity of the galaxy is affecting the way the light travels and is visible

[robroydude]

pretty cool. Let me see if I understand this correctly. So light reflects from the distant stellar target and then the gravity of an intermediate object spins, or warps/shapes, the light into an Einstein Cross. An Einstein Cross can be represented in 2D (on paper) as a ring with a spot in the middle? SWEET! All light behaves in this manner, even in the Earth's gravity. Hmmmmm, now you see it; now you don't. Tada.