Science News for Kids » gamma rays http://www.sciencenewsforkids.org Publication of the Society for Science & the Public Wed, 19 Jun 2013 17:39:07 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 Where cosmic rays are born http://www.sciencenewsforkids.org/2013/02/where-cosmic-rays-are-born/ http://www.sciencenewsforkids.org/2013/02/where-cosmic-rays-are-born/#comments Sat, 16 Feb 2013 23:14:47 +0000 Sid Perkins http://www.sciencenewsforkids.org/?p=15680 Here we go! Shock waves in the clouds of gas surrounding an exploding star (as in this artist’s depiction) accelerate charged particles called protons to very high speed, creating cosmic rays. Credit: Greg Stewart, SLAC Nat'l Accelerator Lab.

New evidence links origin of these very energetic particles to massive explosions of distant stars]]> Here we go! Shock waves in the clouds of gas surrounding an exploding star (as in this artist’s depiction) accelerate charged particles called protons to very high speed, creating cosmic rays. Credit: Greg Stewart, SLAC Nat'l Accelerator Lab.

New evidence links origin of these very energetic particles to massive explosions of distant stars]]> http://www.sciencenewsforkids.org/2013/02/where-cosmic-rays-are-born/feed/ 0 Twinkle, twinkle oldest stars http://www.sciencenewsforkids.org/2012/11/twinkle-twinkle-oldest-stars/ http://www.sciencenewsforkids.org/2012/11/twinkle-twinkle-oldest-stars/#comments Wed, 21 Nov 2012 05:01:04 +0000 Stephen Ornes http://www.sciencenewsforkids.org/?p=14928 Blazars are bright galaxies that send high-powered radiation jets directly toward Earth. They can be used to detect the light in the universe left over from every star that ever shone. In this image, the blazars are shown as green dots; the Milky Way glows orange in the middle. Credit: NASA, DOE, Fermi LAT Collaboration

Astronomers find traces of ancient light in the activity of bright, distant galaxies]]> Blazars are bright galaxies that send high-powered radiation jets directly toward Earth. They can be used to detect the light in the universe left over from every star that ever shone. In this image, the blazars are shown as green dots; the Milky Way glows orange in the middle. Credit: NASA, DOE, Fermi LAT Collaboration

Astronomers find traces of ancient light in the activity of bright, distant galaxies]]> http://www.sciencenewsforkids.org/2012/11/twinkle-twinkle-oldest-stars/feed/ 0