Author: mehedihasan9992

Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Scientists are leaving space fans with one more tasty treat before the year comes to a close. Using the Hubble Space Telescope, astronomers captured a stunning image of the largest protoplanetary disk ever observed, which just happens to be shaped like a giant celestial sandwich. The massive formation of dust and gas, which astronomers call Dracula’s Chivito, resides about 1,000 light-years from Earth and spans roughly 400 billion miles. To put that in perspective, NASA estimates this disk is about 40 times the diameter of our…

Artemis II, meet Astrovan II. NASA’s first astronauts who will fly by the moon in more than 50 years participated in a practice launch countdown on Saturday, December 20, including taking their first trip on a transport vehicle steeped in almost the entire span of US space history—from Apollo through to the ongoing commercial crew program. Artemis II astronauts (from right to left) Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen pose for photographs before boarding the Astrovan II crew transport vehicle for a ride to their rocket during a rehearsal of their launch-day activities at NASA’s Kennedy Space…

Lil Wayne makes an unexpected appearance in a very unusual legal fight. Call of Duty is coming to Switch as soon as a few months from now. And one of Ubisoft’s Canadian studios just unionized. It’s the latest edition of Morning Checkpoint, Kotaku‘s daily roundup of gaming news and culture. I’m finalizing my personal game of the year list and I think I’ve almost nailed it. What games do you wish more people had paid attention to this year? “Okay, you’re a goon, but what’s a goon to a Goblin?? Nothin’. Nothin’. You ain’t scaring nothing.” That’s how attorney Ray…

A few months from now, a NASA spacecraft called the Mars Reconnaissance Orbiter (MRO) will begin its 20th year of observing the Red Planet from above. And, like most 20-year-olds on Earth, MRO’s camera roll is absolutely packed.According to NASA, MRO has just taken its 100,000th photo of the Martian surface using its HiRISE camera. Put another way, that’s an average of 5,000 photos a year, 417 photos a month, or about 14 a day every day since March 2006.The new milestone image, snapped on Oct. 7, shows a shadowy wasteland of mesas, craters and dunes known as Syrtis Major.…

Since I’m fascinated by new display technologies and by improving image quality, I’ve never been a fan of home projectors. Projectors lack the image quality compared to good TVs and monitors, and they’re pretty needy. Without getting into the specific requirements of different models, you generally want a darker room with a large, blank wall for a projector to look its best. That can be a lot to ask for, especially in small, densely decorated homes like mine. That said, a projector can be a space-efficient alternative to a big-screen TV or help you watch TV or movies outside. A…

As we approach the new year, you might find yourself thinking a lot about your goals for 2026. Lots of folks go into January big ambitions to get in shape and keep to a regular fitness routine, but the reality many also drop any health changes they’re trying to make by February. It’s a motivation and discipline issue, but you can help yourself look forward to your time in the gym or time running outdoors with the right tools. I’m talking about a good pair of headphones. I like to use my time running to catch up on podcasts that…

Over 10,000 years of domestication, cats have learned to meow to get exactly what they want from their human servants. Now, researchers in Turkey have found that cats greet men far more vocally than they do women — and this could be another way they manipulate us to get the attention they deserve.The new research reveals “cats’ ability to categorize bonded individuals and modulate their responses,” said study co-author Kaan Kerman, principal investigator of the Animal Behavior and Human-animal Interactions Research Group at Bilkent University in Turkey. “This shows that cats are not automata and possess cognitive abilities that enable…

Compression ratios At issue is the engines’ compression ratio, which compares the volume of the cylinder when the piston is at top dead center with the volume when the piston is at its closest to the crank. Under the 2014–2025 rules, this was set at 18:1, but for 2026 onward, it has been reduced to 16:1. This is measured at ambient temperature, though, not while the engine is running. A running engine is hotter—much hotter—than one sitting at ambient, and as metals heat up, they expand. The engines have very short throws, so it doesn’t take much expansion to increase…

Yesterday, it was confirmed that Vince Zampella, the head of Respawn also known for his work as a lead developer on Call of Duty and Battlefield, was killed in a car accident on Sunday, December 21. Zampella had a storied career, co-founding Infinity Ward in 2002, which would go on to spend the next two decades creating Call of Duty games. After a messy breakup with Activision, he went on to found Titanfall developer Respawn Entertainment and was eventually made the lead of the Battlefield franchise in 2021. We are heartbroken by the loss of Vince Zampella, a creative leader…

A new brain-machine interface (BMI) uses light to “speak” to the brain, mouse experiments show.The minimally invasive wireless device, which is placed under the scalp, receives inputs in the form of light patterns, which are then conveyed to genetically modified neurons in brain tissue.In the new study, these neurons activated as if they were responding to sensory information from the mice’s eyes. The mice learned to match these different patterns of brain activity to perform specific tasks — namely, to uncover the locations of tasty snacks in a series of lab experiments. You may like The device marks a step…