Excellent video on this topic on Space.com.
Gravitational Lensing Eloquently Described in ‘Hubblecast’ – Video ~7′
by Steve Spaleta April 20, 2017
The light from a distant object in space can be “bent” by the gravity of massive objects that pass in front of them. This allows space telescopes like Hubble to get a glimpse at them. The European Space Agency’s series ’Hubblecast’ explains.
Also: Hubble Snaps Pair of Spiral Galaxies – Video ~1.5′
by Steve Spaleta April 20, 2017
About 55 million light years away in the Coma Berenices constellation lie spiral galaxies NGC 4302 and NGC 4298. “At their closest points, the galaxies are separated from each other in projection by only around 7000 light-years,” according to ESA.
