#einsteincross — Public Fediverse posts

The #EinsteinCross #GravitationalLens
Astronomy Picture of the Day

https://apod.nasa.gov/apod/ap260104.html

#APOD

Astronomers Find a Rare "Einstein Cross"

Astronomers use powerful gravitational lenses to peer farther into the Universe than they could with their telescopes alone. A foreground galaxy acts as a natural lens for a more distant galaxy, magnifying it and often splitting its light into several versions. When the alignment is almost perfect, the light is split four ways into an "Einstein Cross." Only a few of these have ever been discovered, and now astronomers have found a new one using the Dark Energy Spectroscopic Instrument. It's both beautiful and scientifically valuable for studying the distant Universe.

#desi #gravitationallens #einsteincross

http://arxiv.org/abs/2307.12470

The #EinsteinCross #GravitationalLens
#Astronomy #Picture of the Day

https://apod.nasa.gov/apod/ap211017.html

#APOD