April 7, 2018, 7:46 p.m.
Hubble Finds an Einstein Ring
These graceful arcs are a cosmic phenomenon known as an Einstein ring - created as the light from distant galaxies warps around an extremely large mass, like a galaxy cluster.
tutti - social network
Tutti is the simplest social network on internet. Here you can make friends, create communities, sell things, make surveys, comment and share stuff.
