News tagged with early universe

ASU astronomer opens new window into early universe

Thirteen billion years ago our universe was dark. There were neither stars nor galaxies; there was only hydrogen gas left over after the Big Bang. Eventually that mysterious time came to an end as the first ...

Dec 08, 2010
4.7 / 5 (14) 2 | with audio podcast

The rate of star formation

(PhysOrg.com) -- New stars continue to appear in the night sky, as the gas and dust in giant interstellar clouds gradually coalesces under the influence of gravity until nuclear burning begins.

Nov 26, 2010
3.6 / 5 (7) 14 | with audio podcast

Missing Milky Way dark matter

Although dark matter is inherently difficult to observe, an understanding of its properties (even if not its nature) allows astronomers to predict where its effects should be felt. The current understanding ...

Nov 09, 2010
4.9 / 5 (11) 7

Image: Where stars are born

Found among the Small Magellanic Cloud's clusters and nebulae NGC 346 is a star-forming region about 200 light-years across, pictured above by the Hubble Space Telescope.

Oct 18, 2010
5 / 5 (3) 1

New beam source for Brookhaven accelerators

(PhysOrg.com) -- A new source of ions will soon be the starting point for the beams entering two major research facilities at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory - the Relativistic ...

Oct 15, 2010
5 / 5 (5) 0 | 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

Could dark baryons explain dark matter?

(PhysOrg.com) -- "The prevailing belief about dark matter particles is that they should be about 100 or more times heavier than protons," Subir Sarkar tells PhysOrg.com. "However, we were thinking about the possibility of lig ...

Jul 20, 2010 feature
4.6 / 5 (27) 18 | with audio podcast

Insights into early star formation

Merging beams of hydrogen atoms and hydrogen ions to create molecular hydrogen in the lab helps shed light on star assembly in the early universe, a U.S. and European research team reports in the July 2 issue of Science.

Jul 01, 2010
4.3 / 5 (3) 0