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By Jackie Wattles, CNN (CNN) — SpaceX’s Polaris Dawn crew is home, capping off a five-day mission to orbit — which included the world’s first commercial spacewalk — by splashing down in the Gulf of Mexico. The Crew Dragon capsule carrying four astronauts landed off the coast of Dry Tortugas, Florida, at 3:37 a.m. ET

By Ashley Strickland, CNN (CNN) — Some chapters of human history are more poignant to revisit than others. The Battle of Waterloo ended a 23-year war, but thousands were killed on June 18, 1815, when allied armies led by the Duke of Wellington and Gebhard Leberecht von Blücher defeated Napoleon Bonaparte and his forces south

By Katie Hunt, CNN (CNN) — Rapa Nui, also known as Easter Island, never experienced a ruinous population collapse, according to an analysis of ancient DNA from 15 former inhabitants of the remote island in the Pacific Ocean. The analysis also suggested that inhabitants of the island, which lies about 3,700 kilometers (2,300 miles) from

By Jackie Wattles, CNN (CNN) — SpaceX’s Polaris Dawn crew is beginning its fifth day in orbit, having marked a few record-setting milestones on a historic journey — including the world’s first commercial spacewalk. Conducting a spacewalk is nothing new. NASA has been carrying out the endeavors in outer space since 1965, when the Gemini

By Kara Fox, CNN London (CNN) — As right-wing rioters attacked communities with racist violence across parts of the UK last month, 22-year-old climate activist Cressie Gethin sat in a prison cell. Her crime? Organizing a disruptive protest against new government-granted licenses to drill for oil — a planet-heating fossil fuel — in the North

By Jackie Wattles, CNN (CNN) — The two NASA astronauts who piloted the first crewed test flight of Boeing’s Starliner capsule — and were left behind on the space station as the beleaguered spacecraft returned to Earth — took questions on Friday for the first time in weeks. Butch Wilmore, a Tennessee native and former

By Ashley Strickland, CNN (CNN) — In the hopes of solving one of the enduring mysteries about the iconic monolith, geologists have shifted the search for the origins of Stonehenge’s central Altar Stone to Scotland after recent research redirected the quest from Wales. But in a surprising twist, a new analysis suggests that the stone

By Issy Ronald, CNN (CNN) — The world still holds many unanswered questions. But thanks to the efforts of the research teams awarded the IG Nobel Prize on Thursday, some of these questions – which you might not even have thought existed – now have answers. We now know that many mammals can breathe through

By Laura Paddison, CNN (CNN) — It started with a melting glacier that set off a huge landslide, which triggered a 650-foot high mega-tsunami in Greenland last September. Then came something inexplicable: a mysterious vibration that shook the planet for nine days. Over the past year, dozens of scientists across the world have been trying to figure

By Simone McCarthy, CNN Hong Kong (CNN) — A Chinese “reusable experimental spacecraft” believed to be the country’s secretive space plane has landed back on Earth after more than eight months in orbit – the latest development in a largely covert race between the United States and China to hone such technology. China’s spacecraft blasted

By Jack Guy, CNN (CNN) — The phases of Venus, the Aurora Australis and the International Space Station transiting the Sun all feature as category winners in the Astronomy Photographer of the Year competition. Ryan Imperio was named the overall winner for his photograph capturing the progression of Baily’s beads during the 2023 annular eclipse,

By Katie Hunt, CNN (CNN) — A cataclysm engulfed the planet some 252 million years ago, wiping out more than 90% of all life. Known as the Great Dying, the mass extinction that ended the Permian geological period was the worst of the five global catastrophic events in Earth’s history, more devastating, than the one

By Katie Hunt, CNN (CNN) — When archaeologist Ludovic Slimak unearthed five teeth in a rock shelter in France’s Rhône Valley in 2015, it was immediately obvious that they belonged to a Neanderthal, the first intact remains of the ancient species to be discovered in that country since 1979. However, the once-in-a-lifetime find, nicknamed Thorin

CNN By Jackie Wattles and Ashley Strickland, CNN (CNN) — A four-person crew of civilians on board SpaceX’s Polaris Dawn mission unlocked the hatch of their capsule and made history as the first group of non-government astronauts to conduct a spacewalk. SpaceX hosted a live webcast of the event — also known as an extravehicular

By Lianne Kolirin, CNN (CNN) — A pile of amputated limbs and the remains of several military horses have been excavated at the site of the Battle of Waterloo. The gruesome discovery was made at a farm in Belgium by Waterloo Uncovered, a UK charity that combines archaeology with veteran care. The epic battle was

By Jackie Wattles and Ashley Strickland, CNN (CNN) — A four-person crew of civilians on board SpaceX’s Polaris Dawn mission unlocked the hatch of their capsule and made history as the first group of non-government astronauts to conduct a spacewalk. SpaceX hosted a live webcast of the event — also known as an extravehicular activity

By Ashley Strickland, CNN (CNN) — Astronomers have observed the detailed motions of giant gas bubbles on the surface of a nearby star for the first time, which rise and fall like the inside of a lava lamp. The massive hot gas bubbles are 75 times the size of the sun, and they appear to

By Jackie Wattles, CNN (CNN) — SpaceX’s Polaris Dawn mission kicked off early Tuesday, launching a four-person crew of civilian astronauts into orbit. And hours later they have already made history: reaching the highest orbit around Earth and surpassing a record set during NASA’s earliest days. The company confirmed that the SpaceX Crew Dragon spacecraft