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Tychos Supernova Remnant in Xray What star created this huge puffball? What's pictured is the hot expanding nebula of Tycho's supernova remnant , the result of a stellar explosion first recorded over 400 years ago by the famous astronomer Tycho Brahe . The featured image is a composite of three X-ray colors taken by the orbiting Chandra X-ray Observatory . The expanding gas cloud is extremely hot, while slightly different expansion speeds have given the cloud a puffy appearance. Although the star that created SN 1572 , is likely completely gone, a sta r dubbed Tycho G , too dim to be discerned here , is thought to be a companion. Finding progenitor remnants of Tycho's supernova is particularly important because the supernova is of Type Ia, an important rung in the distance ladder that calibrates the scale of the visible universe. The peak brightness of Type Ia super...

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DIY Don't waste time hunting down content. Where is your favorite film available online? Don't waste time hunting it down on each individual streaming platform—here's how to find movies and shows in a snap. via Popular Science "http://bit.ly/2TIouhr"

Science Acid, lasers, snakes—the laboratory isn't always a safe haven. The laboratory isn't always a safe haven. Here are some of the most dangerous substances scientists work with. via Popular Science "http://bit.ly/2Fn9nqH"

Gadgets All the best gadgets with none of the walking. The best new gadgets that may or may not show up this year. via Popular Science "http://bit.ly/2TLQPUi"

Muscle Month Nothing like a genetic mutation to make you look like a bodybuilder. If superheroes kept cattle, they’d keep Belgian Blues. These behemoths have such bulging muscles you’d think they spent their lives in a gym. via Popular Science "http://bit.ly/2QFjV5u"

Nexus Media News Meet LarvalBot. A pair of Australians scientists developed a robot that will repopulate coral reefs with coral larvae that can withstand warmer waters. via Popular Science "http://bit.ly/2SRvtEQ"

Technology The term is ubiquitous, especially at CES. Here’s how to understand it. Artificial intelligence and "AI" is an industry buzzword. Here's how to understand the complex, overused term. via Popular Science "http://bit.ly/2VI4AoG"

Technology Here we're talking about motorcycle lenses in particular. Auto-darkening lenses are better than ever. Here’s how they work. via Popular Science "http://bit.ly/2RGKtIl"

Today's Deal: Save 40% on 11-11 Memories Retold !* Look for the deals each day on the front page of Steam. Or follow us on twitter or Facebook for instant notifications wherever you are! *Offer ends Sunday at 10AM Pacific Time via Steam RSS News Feed "http://bit.ly/2FmY9me"

Gadgets For new cyclists looking to take it up a notch. Bike gear to get a new cyclist ready for multi-day trips. via Popular Science "http://bit.ly/2M5mEon"

Space The first time we've caught a baby black hole in action. We’re finding more clues for what that mysterious bright flash was last year, but we’re still not sure what exactly it was. via Popular Science "http://bit.ly/2FqgQ7v"

Profiling Portraits: Family Groups in Pictures By Kristi Finefield In this latest entry in our occasional series, Profiling Portraits , I was inspired by an attempt to take a group photo during a recent family visit, as well as time spent looking through photo albums at previous years' similar efforts. Family photos tend to evoke memories, elicit questions about older ancestors and of course provide a record of your relatives. I find it interesting to view family photos, even of families not my own, to see what they suggest about the family, about relationships between the members, about the individuals, about the time period or circumstances. Like any group portrait, but with the added factor of familial ties, family photos convey more than just the faces of those depicted! Explore an array of photos of families large and small, some famous and some not at all, drawn from many tim...

DIY With the lights out, it's less dangerous. Light pollution damages our health, environment, and way of life in ways that often go unnoticed. Here’s what you can do to help fix it. via Popular Science "http://bit.ly/2M2BsEj"

Environment You'll want a winter coat. The polar vortex is making big changes for the new year, as it broke apart into two, maybe three, pieces. via Popular Science "http://bit.ly/2TOFW4b"

Partial Eclipse over Beijing On January 6 the New Moon rose in silhouette with the Sun seen from northeastern Asia. Near maximum, the dramatic partial solar eclipse is captured in this telephoto view through hazy skies. In the foreground, the hill top Wanchun pavilion overlooking central Beijing's popular Forbidden City hosts eclipse-watching early morning risers. This was the first of five, three solar and two lunar, eclipses for 2019 . Next up is a total lunar eclipse during this month's Full Perigee Moon. At night on January 21, that celestial shadow play will be visible from the hemisphere of planet Earth that includes the Americas, Europe, and western Africa. January 11, 2019 via NASA https://go.nasa.gov/2RpJjS7 Manage this Applet ...