Topic
Gravitational Lensing
3 questions tagged Gravitational Lensing — spanning every one of the seven Ws.
why
Why do gravitational lenses bend light from distant galaxies?
Mass bends spacetime, and light follows that curved path. A massive galaxy cluster can act like a lens, magnifying and distorting galaxies behind it.
CosmologyGravitational Lensing
what
What is an Einstein ring?
An Einstein ring is a nearly perfect circular image made when gravitational lensing bends light from a distant object around a massive foreground object. It is a rare alignment effect.
AstronomyGravitational Lensing
where
Where is the Hubble Frontier Fields region?
The Frontier Fields are a set of sky regions centered on massive galaxy clusters. They were observed by Hubble to magnify very distant galaxies through gravitational lensing.
AstronomyGravitational Lensing