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NASA releases stunning new pic of Milky Way’s ‘downtown’

NASA has released a stunning new picture of our galaxy’s violent, super-energized “downtown.” It’s a composite of 370 observations over the past two decades by the orbiting Chandra X-ray Observatory, depicting billions of stars and countless black holes in the center, or heart, of the Milky Way. A radio telescope in South Africa also contributed

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Only 17 percent of free-flowing rivers are protected, new research shows

The percentage of free-flowing river kilometers that are within protected areas within major river basins (Level 4 basins, as defined by HydroSHEDS). Credit: World Wildlife Fund. New science about the fate of freshwater ecosystems released today by the journal Sustainability finds that only 17 percent of rivers globally are both free-flowing and within protected areas, leaving many of

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NASA spacecraft begins 2-year trip home with asteroid rubble

With rubble from an asteroid tucked inside, a NASA spacecraft fired its engines and began the long journey back to Earth on Monday, leaving the ancient space rock in its rearview mirror. The trip home for the robotic prospector, Osiris-Rex, will take two years. Osiris-Rex reached asteroid Bennu in 2018 and spent two years flying

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NAU team finds U.S. greenhouse gas emissions decline during COVID lockdown 3x greater than previously reported

The COVID-19 pandemic has altered energy use and greenhouse gas (GHG) emissions globally and continues to influence emissions as the response to COVID-19 evolves. Reliable data that can provide a real-time update of emissions has been difficult to acquire and emissions estimates, thus far, have relied on indirect or “proxy” metrics. Now, professor Kevin Gurney of Northern

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Space tourism – 20 years in the making – is finally ready for launch

Space tourism has been slow to get off the ground. Nadia Bormotova/iStock via Getty Images Plus Wendy Whitman Cobb, US Air Force School of Advanced Air and Space Studies For most people, getting to the stars is nothing more than a dream. On April 28, 2001, Dennis Tito achieved that lifelong goal – but he

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