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NGC 6357: The Lobster Nebula Why is the Lobster Nebula forming some of the most massive stars known? No one is yet sure . Cataloged as NGC 6357, the Lobster Nebula houses the open star cluster Pismis 24 near its center -- a home to unusually bright and massive stars. The overall blue glow near the inner star forming region results from the emission of ionized hydrogen gas. The surrounding nebula, featured here , holds a complex tapestry of gas, dark dust , stars still forming, and newly born stars. The intricate patterns are caused by complex interactions between interstellar winds , radiation pressures , magnetic fields , and gravity . NGC 6357 spans about 400 light years and lies about 8,000 light years away toward the constellation of the Scorpion . December 26, 2018 via NASA https://go.nasa.gov/2EJYLRE ...

Technology The wrong moves will make your new UHD set look worse than your old display. Your new 4K TV will look worse than an old tube TV if you don't set it up correctly. via Popular Science "http://bit.ly/2Bvwb2o"

Health The most scientifically effective exercises you can do with a Christmas ham. During the holidays, it’s smart to squeeze in a workout or two between the hearty meals, endless cookies, free-flowing booze, and egg nog. We devised four workouts that… via Popular Science "http://bit.ly/2Q2cuFn"

DIY This holiday season, help save the planet. Let's keep Christmas-tree carbon locked up in the wood. Here's how to get rid of your Christmas tree without damaging the environment. via Popular Science "http://bit.ly/2Q3tVoW"

Science A Weirdest Thing holiday spectacular. What’s the weirdest thing you learned this week? Well, whatever it is, we promise you’ll have an even weirder answer if you listen to PopSci’s newest podcast. via Popular Science "http://bit.ly/2Q2iVbp"