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An imbalance between matter and antimatter in the universe produced all the things in existence, including corned beef sandwiches. Erik Rank/Getty Images hide caption

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Erik Rank/Getty Images

Why Corned Beef Sandwiches — And The Rest Of The Universe — Exist

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Phil Plait Phil Plait hide caption

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Phil Plait

Phil Plait: How Can Mistakes Lead To Scientific Advancement?

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Boarding Pass for Mars nasa.gov hide caption

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nasa.gov

NASA Wants To Send Your Name To Mars In 2020

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Asteroid Simulation Reveals How Well Earth's Planetary Defenses Work

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A stripe of red dots shows the risk corridor for a hypothetical asteroid strike, part of an exercise this week held by planetary defense experts in which they analyze data about a fictitious asteroid. Landsat/Copernicus/Google Earth/Dept. of State Geographer hide caption

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Landsat/Copernicus/Google Earth/Dept. of State Geographer

This Week, NASA Is Pretending An Asteroid Is On Its Way To Smack The Earth

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InSight seismometer with protectiive wind cover deployed on Mars. NASA/JPL-Caltech hide caption

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NASA/JPL-Caltech

NASA's InSight Probe May Have Recorded First Sounds Of Marsquake

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Former Astronaut On Watching For Life-Destroying Objects From Space

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South Korean President Park Geun-hye walks past a NASA logo during a tour at the agency's Goddard Space Flight Center in Greenbelt, Md. Patrick Semansky/AP hide caption

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Patrick Semansky/AP

Do You Love Lying In Bed? Get Paid By NASA To Do It For Space Research

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Scientists Share Results From NASA's Twins Study

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Scientists Have Taken The First Photo Of Something That's Invisible — A Black Hole

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The first-ever image of a black hole was released Wednesday by a consortium of researchers, showing the "black hole at the center of galaxy M87, outlined by emission from hot gas swirling around it under the influence of strong gravity near its event horizon." Event Horizon Telescope collaboration et al hide caption

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Event Horizon Telescope collaboration et al