What we call “light” is actually just a tiny fraction of the broad range of radiation on the electromagnetic radiation spectrum. The entire span stretches from very-low-energy radio waves through microwaves, infrared light, visible...
(multimedia) During a powerful solar blast on March 7, NASA’s Fermi Gamma-ray Space Telescope detected the highest-energy light ever associated with an eruption on the sun. The discovery heralds Fermi’s new role as a...
The mystery surrounding the source of the highest-energy particles known in the Universe has grown deeper. The particles, known as cosmic rays, can show up with energies a million times higher than the biggest...
As solar activity builds toward an expected peak in 2013, a double-barreled sunspot has been doubling in size over the past couple of days and now has the potential to shoot significant eruptions in...
A powerful solar eruption is expected to blast a stream of charged particles toward Earth tomorrow (Jan. 24), as the strongest radiation storm since 2005 rages on the sun. Early this morning (0359 GMT...
WASHINGTON (AP) — After years of quiet, the sun is coming alive with solar storms in a big way. The sun shot off a flare Thursday afternoon from a region that scientists are calling...
The Fermi space telescope has spotted the youngest-ever millisecond pulsar – a fast-spinning cosmic “lighthouse” that is the leftovers from a supernova.
