NuSTAR observes stellar corpses in the Andromeda galaxy

NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR, has captured the best high-energy X-ray view yet of a portion of our nearest large, neighboring galaxy, Andromeda. The space mission has observed 40 “X-ray binaries” — intense sources of X-rays comprised of a black hole or neutron star that feeds off a stellar companion. The results will
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MAVEN Navigation Update

As the #MAVEN spacecraft orbits #Mars, its elliptical orbit precesses and incurs changes over time. In order for scientists to acquire the data they need from Mars’ upper atmosphere, the spacecraft must remain within a specific corridor around Mars. The team regularly monitors and models MAVEN’s orbit to ensure that targeted densities are maintained throughout the mission The
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