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Finding Galaxies with Active Nuclei
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The nuclei of most galaxies host supermassive black holes with millions or even billions of solar-masses of material. Material in the vicinity of such black holes can accrete onto a tor...
Is Dark Matter Made of Primordial Black Holes?
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Astronomers studying the motions of galaxies and the character of the cosmic microwave background radiation came to realize in the last century that most of the matter in the universe was...
Send Your Name to the Sun on the Parker Solar Probe
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This summer, NASA's Parker Solar Probe will launch from the Kennedy Space Center in Florida. This historic mission will travel almost 90 million miles, facing brutal heat and radiation, t...
The Gamma Ray Burst – Supernova Connection
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A "core-collapse" supernova occurs when the iron core of a massive star collapses under the force of gravity and then rebounds, generating pressure waves and shocks that propagate outward...
Exotic Binary Stars
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Cataclysmic variable stars (CVs) are white dwarf stars that are accreting from an orbiting, low mass binary companion star. The accretion is facilitated by the proximity of the stars; typ...
Scientists Surprised by Relentless Cosmic Cold Front
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Cambridge, MA -
This winter has brought many intense and powerful storms, with cold fronts sweeping across much of the United States. On a much grander scale, astronomers have discover...
Rings and Gaps in a Developing Planetary System
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The discovery of an exoplanet has most often resulted from the monitoring of a star's flicker (the transiting method) or its wobble (the radial velocity method). Discovery by direct imagi...
NASA Prepares to Launch Next Mission to Search the Sky for New Worlds
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Cambridge, MA -
NASA's Transiting Exoplanet Survey Satellite (TESS) is undergoing final preparations in Florida for its April 16 launch to find undiscovered worlds around nearby stars,...
Ionized Molecules Trace Galactic Outflows
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There is a process at work in most galaxies that affects both the central black hole mass as well as the galaxy's global velocity structure and luminosity. Astronomers suspect that feedb...