A 25-ton Chinese rocket booster will crash to Earth Saturday. What's the risk?

Over 60 million years ago, penguins abandoned flight for swimming. Here's how. | Strange 'alien' holes discovered on the ocean floor | A 25-ton Chinese rocket booster will crash to Earth Saturday. What's the risk? Created for {EMAIL} | [Web Version]( July 29, 2022 CONNECT WITH LIVESCIENCE  [Facebook]( [Twitter](  [LIVESCIENCE]( Amazing science every day [SIGN UP]( ⋅ [WEBSITE](  [] Top Science News [] [Over 60 million years ago, penguins abandoned flight for swimming. Here's how.]( [Over 60 million years ago, penguins abandoned flight for swimming. Here's how.]( (Jacqueline Deely) Penguins are perhaps best known for being flightless birds whose wings help them "fly" through frigid Antarctic waters. But penguins lost their ability to fly and instead became streamlined swimmers some 60 million years ago, long before the Antarctic ice sheet formed — and researchers have now revealed how that happened. Full Story: [Live Science]( (7/29) [LinkedIn]( [Twitter]( [Facebook]( [Email]( Just the Facts, Ma'am "I stopped watching TV news a year ago, so sick of the bias everywhere. But in doing so, I was out of the loop. I decided to give 1440 a try & I've not been disappointed. Finally, Walter Cronkite style reporting! Just the facts. I also love that I can click a link to see more on many stories. Keep up the good work!" [Join for free now](. ADVERTISEMENT: [] Amazing Earth [] [Strange 'alien' holes discovered on the ocean floor]( [Strange 'alien' holes discovered on the ocean floor]( (NOAA) Explorers have discovered a series of mysterious, "perfectly aligned" holes punched into the seafloor roughly 1.6 miles (2.6 kilometers) beneath the ocean surface, and they have no idea who or what made them. The strange holes were spotted by the crew of the National Oceanic and Atmospheric Administration's (NOAA) Okeanos Explorer vessel as they investigated the Mid-Atlantic Ridge — a mostly unexplored region of the seafloor that is part of the world's largest mountain range. Full Story: [Live Science]( (7/29) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Space Exploration [] [A 25-ton Chinese rocket booster will crash to Earth Saturday. What's the risk?]( [A 25-ton Chinese rocket booster will crash to Earth Saturday. What's the risk?]( (CASC) The core stage of a Chinese Long March 5B rocket is set to tumble uncontrollably back to Earth next week, in a reentry that China is tracking closely and has said poses little risk. The roughly 25-ton (23 metric tons) rocket stage, which launched on July 24 to deliver the Wentian laboratory cabin module to China's incomplete Tiangong space station, is predicted to reenter Earth's atmosphere on July 30 at 7:24 p.m. ET, give or take 16 hours, according to researchers at The Aerospace Corporation's Center for Orbital and Reentry Debris Studies. Full Story: [Live Science]( (7/29) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Curious Creatures [] ['Walking sharks' caught on video, astound scientists]( ['Walking sharks' caught on video, astound scientists]( (iStock/Getty Images Plus) On a remote outcropping at nightfall on the coast of Papua New Guinea on May 3, 2022, scientists encountered something amazing: a walking shark. Using its fins to drag itself, the diminutive tan-and-black-speckled shark shimmied across a tide pool that contained barely enough water to skim its belly, moving like a lumbering sea lion as it dragged its body across the shore. Full Story: [Live Science]( (7/29) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Bones [] ['Never seen anything like it': Impeccably preserved Jurassic fish fossils found on UK farm]( ['Never seen anything like it': Impeccably preserved Jurassic fish fossils found on UK farm]( (Courtesy Sally and Neville Hollingworth) A farm in England was the unlikely source of a Jurassic jackpot: a treasure trove of 183 million-year-old fossils. On the outskirts of Gloucestershire in the Cotswolds, beneath soil that is currently trampled under the hooves of grazing cattle, researchers recently uncovered the fossilized remains of fish, giant marine reptiles called ichthyosaurs, squids, insects and other ancient animals dating to the early part of the Jurassic period (201.3 million to 145 million years ago). Full Story: [Live Science]( (7/29) [LinkedIn]( [Twitter]( [Facebook]( [Email](   [Sign Up]( | [Update Profile]( | [Unsubscribe]( [Privacy Policy]( | [Cookies Policy]( | [Terms and Conditions]( CONTACT US: [FEEDBACK](mailto:livescience@smartbrief.com) | [ADVERTISE]( Future US LLC © 1100 13th St. NW, Suite 1000, Washington, DC 20005