Astrophysics & Cosmology

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November 25, 2013
In scientific circles, “mock” is not always a four-letter word. To test that they’re interpreting their massive amounts of data correctly, astrophysicists create even more data: “mock” data. And while that may be counterintuitive at first, it actually makes a surprising amount of sense.
November 21, 2013
News Feature
SLAC and Stanford physicists played a key role in monitoring and analyzing the brightest gamma ray burst ever measured, and suggest that its never-before-seen features could call for a rewrite of current theories.
Image - Collapsing star shooting out jet of gas
November 12, 2013
News Feature
Scientists in SLAC's Integrated Circuits Department reach a new frontier in ultrafast X-ray science with intricately designed signal-processing chips that translate particles of light into bits of data.
Photo - Four ePix100 prototype chips bonded in a test setup. (Brad Plummer/SLAC)
November 4, 2013
Particle astrophysicists are helping illuminate the dark side of the universe for a new show at the American Museum of Natural History in New York City.
October 30, 2013
News Feature
Traces of iron spread smoothly throughout a massive galaxy cluster tell the 10 billion-year-old story of exploding supernovae and fierce outbursts from supermassive black holes sowing heavy elements throughout the early cosmos.
Image: Illustration of some markers of the universe's turbulent youth, such as supernova explosions and active galactic nuclei (Akihiro Ikeshita).
August 22, 2013
News Feature
On June 11, 2008, what was then the Gamma-ray Large Area Space Telescope rode a Delta II rocket into low-Earth orbit. After two months of tests and checks and calibrations, on August 11, 2008, NASA declared GLAST open for business as astrophysics' premier eye on the gamma-ray sky. Five years, a name change, a near miss with a defunct Soviet spy satellite, and countless surprises later, the spacecraft now known as the Fermi Gamma-ray Space Telescope is still going strong, with another five-year mission stretching ahead of it.
Photo - The Fermi Gamma-ray Space Telescope launches June 11, 2008
July 31, 2013
News Feature
For the 41st annual Particle Physics & Astrophysics Department’s SLAC Summer Institute (SSI), organizers introduced a successful new feature.
May 21, 2013
News Feature
Now that it looks like the hunt for the Higgs boson is over, particles of dark matter are at the top of the physics "Most Wanted" list.
KIPAC theorists (l to r) Louis Strigari, Risa Wechsler and Yao-Yuan Mao discussing dark matter velocity distributions. (Credit: Luis Fernandez.)
May 3, 2013
News Feature
A record-setting blast of gamma rays from a dying star in a distant galaxy has wowed astronomers around the world.
Image - Superbright gamma-ray burst
February 14, 2013
Press Release
A new study confirms what scientists have long suspected: Cosmic rays – energetic particles that pelt Earth from all directions – are born in the violent aftermath of supernovas, exploding stars throughout the galaxy.
Artist's rendition of a supernova shock wave

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