Almost a decade ago when astronomers pointed the Hubble Space Telescope at an apparently featureless patch of the sky they were rewarded wit...

A dissociative galaxy cluster is a cluster of galaxies that just can't keep it together any longer. This may sound like an unnecessary ...

The beginning was heralded by an elephant's trumpet. The universe is carried on the back of an ancient turtle. There were once ten s...

Lawrence Krauss speaks humorously and frankly on cosmology. This talk is filled with insights on how we came to our remarkable knowledge of ...

The existence of magnetic fields on cosmologically large scales is an unsolved problem in astrophysics. Theory favors a universe that did no...

Current observations of our universe indicate that the universe is expanding at an accelerating rate. The expansion of the universe will eve...

The Copernican principle holds that humans are not privileged observers of the Universe. Copernicus stated that the Earth is not at the cent...

Cosmology not only probes the absolute mass scale of the neutrino but is a completely independent method to test against. In any case, it is...

The first image of the microwave sky was released today by the Planck collaboration. The image is the result of a year of observations from...

LINDAU, Germany  —  John Mather is humble when describing his measurements of the cosmic microwave background radiation despite the fact tha...

Dark matter is like the Rome of astronomy, all observations lead to dark matter. The problem is that physicists and astronomers, don't k...

The cosmological principle states the universe is homogeneous and isotropic when viewed on large enough scales. It is the ultimate extension...

A Sunday diversion with Sean Carroll on the origin of the universe and the arrow of time. Part two is here .

First, I should say that the Supernova Cosmology Group and others using Type Ia supernova as standard candles are very precise in their wo...