Observatory sheds light on last acts of first stars

XMM-Newton observatory has helped scientists to discover how the Universe`s first stars ended their lives in giant explosions from the recent detection of a gamma-ray burst from a massive blue supergiant.

`Violent` gamma-ray outbursts near supermassive black holes

An international team of astronomers led by Lars Fuhrmann from the Max Planck Institute for Radio Astronomy in Bonn, Germany, used some of the best single-dish radio telescopes for several years, in combination with NASA`s Fermi Gamma-ray Space Telescope, to study the place where high energy outbursts occur.

Black hole`s birth kills `exploding` radio star

Astronomers have found a new population of exploding stars that "switch off" their radio transmissions before collapsing into a Black Hole.

Most distant blazar may hold new mystery

New observations of the blazar known as PKS 1424+240 showed that it is the most distant known source of very-high-energy gamma rays, but its emission spectrum now appears highly unusual in light of the new data.

Gamma rays from the center of Milky Way could be evidence of dark matter

Gamma-ray photons seen emanating from the center of the Milky Way galaxy could support the theory that dark matter exists at the center of galaxies, according to UC Irvine astrophysicists.

Brighter than Sun gamma rays created

The brightest gamma ray beam ever created - more than a thousand billion times more brilliant than the Sun - has been produced.

NASA telescope detects gamma-rays from microquasar

Ahead of the Copenhagen Summit
on climate change, India today said the meeting should make
all efforts to come out with a "legally binding substantive"
outcome on tackling the pressing global challenge.