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Caltech-Led Mission to Probe Ultraviolet Sky and Stars

NASA's NuSTAR makes illuminating discoveries with 'nuisance' light

Bubble with titanium trigger titanic explosions

 E-Mail IMAGE: Astronomers using NASA s Chandra X-ray Observatory have announced the discovery of an important type of titanium blasting out from the center of the supernova remnant Cassiopeia A (Cas A), a result. view more  Credit: NASA/CXC/RIKEN/T. Sato et al.; NuSTAR: NASA/NuSTAR Scientists have found fragments of titanium blasting out of a famous supernova. This discovery, made with NASA s Chandra X-ray Observatory, could be a major step in pinpointing exactly how some giant stars explode. This work is based on Chandra observations of the remains of a supernova called Cassiopeia A (Cas A), located in our galaxy about 11,000 light-years from Earth. This is one of the youngest known supernova remnants, with an age of about 350 years.

Ideas, Inventions And Innovations : Searching Betelgeuse for Axions and Dark Matter

Ideas, Inventions And Innovations Searching Betelgeuse for Axions and Dark Matter An MIT-led search for axions from nearby star Betelgeuse (pictured here) came up empty, significantly narrowing the search for hypothetical dark matter particle. Credits: Image: Collage by MIT News. Betelgeuse image courtesy of ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella n impression on ordinary matter. As such, the ghost-like particle is a leading contender as a component of dark matter a hypothetical, invisible type of matter that is thought to make up 85 percent of the mass in the universe. Axions have so far evaded detection. Physicists predict that if they do exist, they must be produced within extreme environments, such as the cores of stars at the precipice of a supernova. When these stars spew axions out into the universe, the particles, on encountering any surrounding magnetic fields, should briefly morph into photons and potentially reveal themselves.