CNN – World

By Ashley Strickland, CNN A new telescope image has shed light on the ghostly remains of the first recorded supernova. More than 1,800 years ago, in the year 185, Chinese astronomers recorded what they called a “guest star” after a bright new light appeared in the night sky. This brightness resulted when a star exploded

By Ashley Strickland, CNN Computers powered by human brain cells may sound like science fiction, but a team of researchers in the United States believes such machines, part of a new field called “organoid intelligence,” could shape the future — and now they have a plan to get there. Organoids are lab-grown tissues that resemble

By Jackie Wattles, CNN Scientists are puzzling over a strange feeding technique that they think whales recently began using: The creatures swim to the surface of the ocean, open their mouths into a gaping yawn with their upper jaw sitting just below the water’s surface, and wait for hoards of fish to swim in. The

By Jackie Wattles, CNN SpaceX and NASA launched a fresh crew of astronauts on a mission to the International Space Station, kicking off a roughly six-month stay in space. The mission — which is carrying two NASA astronauts, a Russian cosmonaut and an astronaut from the United Arab Emirates — took off from NASA’s Kennedy

By Ashley Strickland, CNN When a NASA spacecraft intentionally crashed into an asteroid on September 26, the collision caused the space rock to release a cometlike tail. An array of telescopes, including the Hubble Space Telescope, were perfectly positioned to capture the DART, or Double Asteroid Redirection Test, mission and its aftermath, which continues to

By Katie Hunt and Ashley Strickland, CNN Jupiter and Venus will appear very close together in the night sky on Wednesday, with the two planets set to pass each other in what’s known as a conjunction. Jupiter will appear to shift westward, while a bright Venus will seem to move slowly in the other direction,

By Jackie Wattles, CNN SpaceX and NASA have called off an astronaut launch to the International Space Station after an issue with the rocket’s ground system was detected. With about two minutes left on the countdown clock, the launch was called off because of a problem related to the TEA-TEB ignition fluid, which is used

By Laura Paddison, CNN Duncan Enright never imagined he’d get death threats over a plan to reduce grinding city traffic. But it is exactly what happened to the local politician in the UK, who found himself deluged with abusive messages on social media and by email over his involvement in a proposed traffic filtering trial

By Ashley Strickland, CNN Scientists have long believed our planet is built upon four layers of rocks, minerals and magma deposited over millions of years of existence. But researchers now think the world has five major layers after discovering a previously undetectable 400-mile-wide ball of iron inside Earth’s inner core. The revelation could help experts

By Zoe Sottile, CNN The sailor who spent weeks lost at sea in January, surviving largely off of ketchup, could have a new, state-of-the-art boat coming to him. And the handsome gift would be thanks to Ketchup giant Heinz, which is trying to locate Elvis Francois. The company posted a callout to social media on

By Ashley Strickland, CNN Astronomers have found an unusually large planet orbiting a small star, located about 280 light-years from Earth. The unexpected size of the newly discovered world, called TOI 5205b, has led researchers to call it the “forbidden planet.” About the size of Jupiter, it was spotted by researchers using NASA’s Transiting Exoplanet

By Katie Hunt, CNN Archaeologists digging in a cave in southern France say they have unearthed the earliest evidence of bow and arrow use outside Africa. Grotte Mandrin, near Malataverne in the Rhône Valley, is a cave that was inhabited by early modern humans about 54,000 years ago. A research team recovered more than 300

By Francisco Guzman and Pete Burn, CNN Are you ready to give up caffeine for 40 days? What about your social media accounts? While giving up those things may seem hard for you, Christians long ago used to give up a whole lot more. Ash Wednesday is today. It marks the first day of Lent

By Ashley Strickland, CNN When archaeologists uncovered the burial site of two brothers who lived during the 15th century BC in Israel, they were surprised to discover that one of them had brain surgery shortly before he died. The finding marks the earliest example of trephination, a type of cranial surgery, found in the ancient