A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.

New observations suggest that the universe’s oldest galaxies are brighter than expected. Here's why this may be a big deal.

A team of astronomers has identified a double gravitational lens system with an extraordinary “zig-zag” light path, rewriting ...

Two massive galaxies are bending light from the same distant quasar, creating a so-called Einstein zigzag lens that could ...

The National Institute for Astrophysics (INAF) has released images of five galaxies in the local universe, taken with the ...

An international team of astronomers has discovered an instance of two galaxies aligned in a way where their gravity acts as ...

The Arecibo Message as it appears when its 1,679 bits are properly aligned on a grid (left), an annotated illustration ...

Scientists uncovered evidence that astrophysics models of massive stars and supernovae are inconsistent with observational ...