Day: April 4, 2015

Astronomers upgrade their cosmic light bulbs

A new study analyzes several sites where dead stars once exploded. SDSS In a new report, scientists show that using a particular class of type Ia supernovae that occur near youthful stars can improve measurements of cosmic distances. By Jet Propulsion Laboratory, Pasadena, California, University of California, Berkeley  |  Published: Monday, March 30, 2015 The …

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Hubble and Chandra discover dark matter is not as sticky as once thought

This collage shows images of six different galaxy clusters taken with NASA’s Hubble Space Telescope and Chandra X-ray Observatory. The clusters were observed in a study of how dark matter in clusters of galaxies behaves when the clusters collide. Seventy-two large cluster collisions were studied in total. Using visible-light images from Hubble, the team was …

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