Dwarf galaxies may help reveal what `dark matter` really is

Last Updated: Tuesday, April 3, 2012, 13:18

Nearly 80 percent of the matter in the universe is invisible to telescopes, yet its gravitational influence is manifest in the orbital speeds of stars around galaxies.

NASA satellite probes origin of exploding stars

Last Updated: Wednesday, March 21, 2012, 12:45

Researchers have shed new light into the elusive origins of an important class of exploding star called Type Ia supernovae.

Fermi telescope unveils gamma-ray bursts’ highest power side

Last Updated: Monday, February 20, 2012, 16:17

The Fermi Gamma-Ray Space Telescope has recorded the highest energy portion of the gamma-ray bursts, which last for a few seconds.

Gamma ray burst may have caused mass extinction

Last Updated: Sunday, January 8, 2012, 16:23

Gamma ray burst, which occurred in a colossal group of stars called a globular cluster may have triggered a mass extinction on Earth 440 million years ago.

A surprising look at ingredients of galaxies

Last Updated: Thursday, November 3, 2011, 17:15

Astronomers have identified a pair of young galaxies with surprising chemical ingredients in the early Universe following a Gamma-ray burst.

Gamma-ray bursts `could end life on Earth`

Last Updated: Sunday, October 9, 2011, 16:43

Gamma-ray bursts, massive explosions on the other side of the galaxy, could end life on Earth, say planetary scientists.

Crab Pulsar energy emissions higher than expected

Last Updated: Friday, October 7, 2011, 16:34

An international team of astrophysicists has spotted pulsed gamma ray emissions coming from the Crab Pulsar with energies far higher than expected.

Gamma-ray observations challenge physics

Last Updated: Friday, July 1, 2011, 17:13

Now, the European Space Agency``s (ESA) Integral gamma-ray observatory has placed stringent new limits on the size of these quantum ‘grains’ in space, showing them to be much smaller than some quantum gravity ideas would suggest.

Supercomputer solves gamma-ray burst mystery

Last Updated: Friday, April 8, 2011, 12:15

The study provides the most detailed glimpse of the forces driving some of the universe’s most energetic explosions.

Crab nebula is slowly dimming

Last Updated: Friday, January 14, 2011, 17:04

Crab Nebula, once considered to be the most stable source of high energy radiation in the sky, is slowly dimming.

Physicists isolate sample of spin polarized positronium atoms

Last Updated: Saturday, May 1, 2010, 18:38

A new research by American scientists could help in the development of gamma ray lasers and produce fusion power.

Source of some gamma ray light still a mystery?

Last Updated: Thursday, March 4, 2010, 13:17

An unexpectedly small fraction of the gamma ray light that pervades the universe comes from gluttonous black holes - but the source of the rest is unknown though dark matter could be a contributor, says a new study.