“Warm Neptune” Has Unexpectedly Primitive Atmosphere

May 12, 2017

By Elizabeth Zubritsky, NASA A study combining observations from NASA’s Hubble and Spitzer space telescopes reveals that the distant planet HAT-P-26b has a primitive atmosphere composed almost entirely of hydrogen and helium. Located about 437 light […]

NASA’s NuSTAR Finds New Clues to Chameleon Supernova

January 24, 2017

By Elizabeth Landau, Jet Propulsion Laboratory “We’re made of star stuff,” astronomer Carl Sagan famously said. Nuclear reactions that happened in ancient stars generated much of the material that makes up our bodies, our planet and […]