News tagged with cosmic microwave background

Backgrounds

You’ve probably heard of the cosmic microwave background, but it doesn’t stop there. The as-yet-undetectable cosmic neutrino background is out there waiting to give us a view into the first seconds ...

Jun 28, 2011
5 / 5 (9) 3

The most massive distant object known

(PhysOrg.com) -- Galaxies often occur in groups. Our own Milky Way galaxy, for example, and its local neighborhood with about fifty galaxies are at the edge of the Virgo Cluster, a collection of somewhere ...

Apr 11, 2011
4.9 / 5 (12) 61 | with audio podcast

UBC physicists make atoms and dark matter add up

Physicists at the University of British Columbia and TRIUMF have proposed a unified explanation for dark matter and the so-called baryon asymmetry -- the apparent imbalance of matter with positive baryon charge and antimatter ...

Nov 29, 2010
4 / 5 (14) 14 | with audio podcast

Scientists glimpse universe before the Big Bang

(PhysOrg.com) -- In general, asking what happened before the Big Bang is not really considered a science question. According to Big Bang theory, time did not even exist before this point roughly 13.7 billion ...

Nov 23, 2010 weblog
4.7 / 5 (108) 174 | with audio podcast

Planck detects new supercluster of galaxies

Surveying the microwave sky, Planck has obtained its very first images of galaxy clusters, amongst the largest objects in the Universe, by means of the Sunyaev-Zel'dovich effect, a characteristic signature ...

Sep 16, 2010
4.9 / 5 (15) 2 | with audio podcast

Ripples in the cosmic background

(PhysOrg.com) -- The universe was created 13.73 billion years ago in a blaze of light -- the big bang. We also think that, about 380,000 years later, after matter (mostly hydrogen atoms) had cooled enough ...

Sep 07, 2010
4.6 / 5 (21) 5 | with audio podcast

Durham astronomers' doubts about the 'dark side'

(PhysOrg.com) -- New research by astronomers in the Physics Department at Durham University suggests that the conventional wisdom about the content of the Universe may be wrong. Graduate student Utane Sawangwit ...

Jun 14, 2010
5 / 5 (53) 72 | with audio podcast