Dark matter: Theory vs. Observed

Cosmology

Hubble Images Reveal Dark Matter Problem

Astronomers studying Hubble Space Telescope images of massive galaxy clusters have uncovered a potential problem with dark matter.

KIDS survey

Cosmology

Our Unexpectedly Smooth Universe May Point to New Physics

The latest data release from a survey of 31 million galaxies reveals that our universe is even smoother than we thought it was.

Galaxies

Incredible Resolution: Reconstructed Galaxy Pushes Hubble’s Limits

Thanks to the effects of gravitational lensing, a team of astronomers was able to reconstruct a distant galaxy and study its unexpectedly clumpy star forming regions.

Supernova Einstein Cross

Cosmology

Cosmic Lens Provides Unique View of Supernova

Astronomers have discovered a gravitationally lensed Type Ia supernova that will soon give them a new measure of the universe’s expansion.

KIDS Dark Matter Map

Cosmology

Not-So-Clumpy Dark Matter Poses Cosmological Challenge

Astronomers analyzing a new sky survey have found that the distribution of dark matter in the modern universe is smoother than predicted from observations of a far younger universe.

Galaxies

Students Discover a Galactic Eye of Horus

Undergraduate students in Japan stumbled upon a rare lensing of two distinct background galaxies.

Stellar Science

Mysteriously Bright Supernova Explained

In 2010, a mysteriously bright supernova appeared, later sparking a debate within the astronomy community. But new images of the now-faded supernova reveal an intervening — and until now invisible — cosmic lens, which magnified its light.

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