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Confirmed: Stellar Behemoth Self-Destructs in a Type IIb Supernova

Wolf-Rayet stars, more than 20 times as massive as the Sun and at least five times as hot, are relatively rare and often obscured. Scientists don’t know much about how they form, live and die.

Berkeley Lab Researchers Create a Nonlinear Light-generating Zero-Index MetaMaterial

Berkeley Lab researchers have used a unique optical metamaterial with zero-index refraction to generate phase mismatch–free nonlinear light, an important step towards efficient light generation for future quantum networks and light sources.

The Last Big Bump Before a Supernova Explodes

The Palomar Transient Factory (PTF) brings together universities, observatories, and one national laboratory to hunt for supernovae and other astronomical objects. At the National Energy Research Scientific Computing Center (NERSC) Berkeley Lab processes and stores the data from PTF’s surveys, which use the Oschin Telescope at Caltech’s Palomar Observatory. On August 25, 2010, PTF’s “autonomous

Another Advance on the Road to Spintronics

Using a new technique called HARPES, for Hard x-ray Angle-Resolved PhotoEmission Spectroscopy, Berkeley Lab researchers have unlocked the ferromagnetic secrets of dilute magnetic semiconductors, materials of great interest for spintronic technology.

Supernovae of the Same Brightness, Cut From Vastly Different Cosmic Cloth

The multi-institutional Palomar Transient Factory (PTF) team presents the first-ever direct observations of a Type 1a supernova progenitor system. Astronomers have collected evidence indicating that the progenitor system of a Type 1a supernova, called PTF 11kx, contains a red giant star. They also show that the system previously underwent at least one much smaller nova eruption before it ended its life in a destructive supernova.