Author: mehedihasan9992

Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Pamela Ann Melroy’s life has been defined by challenges that continually pushed the boundaries of what was possible. She is a veteran astronaut who flew on three Space Shuttle missions and played a leading role in building the International Space Station. She later served as the Deputy Administrator of NASA. That lifelong pursuit of exploration began early. Growing up watching the TV series Star Trek, Melroy dreamed of venturing beyond Earth. At a time when few women could become pilots, she joined the U.S. Air Force…

Size: If you’re a commuter, you’ll want to remove lights for safekeeping. Look for the most compact designs that fit easily in a pocket or bag. Thanks to LED bulb technology, you can find impressively bright, pocketable lights. Sizes and weights here are listed without the mounting brackets (unless they’re integral) because their size and weight in your bag is arguably more important than adding a couple of ounces to your bike (unless you’re a pro tour rider).Mounting style: Where and how you attach your bike lights matters. Handlebar mounts are great for lighting the road ahead, and look for…

As a deal writer, I’m still feeling the lingering effects of Amazon’s Prime Day sale. Apparently drinking five espresso shots every morning to help you find better deals is a “bad idea,” and “totally irresponsible,” according to my doctor. But I’m determined to find the best deals. And right now, Amazon has Anker’s excellent gadgets on sale across the board. The sale includes portable chargers, charging bricks, cables, portable power stations and more. Go grab them before the price jumps in the pre-Black Friday period. Editor’s Picks Anker SOLIX C1000 Gen 2 Portable Power Station – 50 % off ($397.99,…

Lauren Goode: Well, they’re all interested in growing more. Who among us, Mike? But the hyperscalers refers to this class of major tech companies or cloud service providers. So Meta, Amazon, Microsoft, Google, they’re all in that category.Molly Taft: Yeah, and I think it’s important to remember that these companies have so much money and they have an ability to raise capital like nobody’s business. So they’re able to do some really crazy stuff to build quick and to build-out really, really big. And they’re getting pretty creative, because their goals right now are to build these things quickly and…

Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Governmental disaster preparedness isn’t limited to crises that originate here on Earth. In fact, experts know that some of the most disruptive and unpredictable occurrences begin on the surface of the sun. For weeks now, emergency planners at the European Space Agency (ESA) in Darmstadt, Germany, have been conducting test runs to improve response capabilities for a cataclysmic solar storm. And while today’s digitally interconnected world means that such an event would inevitably disrupt global systems, researchers are working to ensure humanity has the biggest lead…

The US Department of Homeland Security is seeking to develop a new mobile surveillance platform that fuses artificial intelligence, radar, high-powered cameras, and wireless networking into a single system, according to federal contracting records reviewed by WIRED. The technology would mount on 4×4 vehicles capable of reaching remote areas and transforming into rolling, autonomous observation towers, extending the reach of border surveillance far beyond its current fixed sites.The proposed system surfaced Friday after US Customs and Border Protection quietly published a presolicitation notice for what it’s calling a “Modular Mobile Surveillance System,” or M2S2. The listing includes draft technical documents,…

All sorts of crazy things have been suggested regarding 3I/ATLAS, the third known interstellar object that we’ve discovered. Some are simply conspiracy theories about it being an alien spacecraft, while others have been well-thought out suggestions, like using Martian-based probes to observe the comet as it streaked past the red planet.A new paper pre-published on arXiv and accepted for publication by the Research Notes of the American Astronomical Society by Samuel Grand and Geraint Jones, of the Finnish Meteorological Institute and ESA respectively, falls into the latter category, and suggests utilizing two spacecraft already en route to their separate destinations…

If you watch sci-fi movies, you’d think that flying a spaceship is just like driving a slightly more complicated car (or a Winnebago in Spaceballs). And George Lucas gave us those galactic battles with pilots who look like they’re flying fighter jets on Earth.Well, bad news: Space is really, really different. In particular, moving a vehicle in orbit around Earth is way more complicated than that. The maneuvers you might make with a plane sometimes have the opposite effect in orbit.To see what I mean, we’ll first just grab some basic physics and build ourselves a little model of orbital…

By deciphering hieroglyphic inscriptions on centuries-old rocks, researchers have identified the name of a previously unknown Maya queen. Known as Ix Ch’ak Ch’een, she ruled Cobá, or the “city of choppy water,” in Mexico’s Yucatán Peninsula in the sixth century, according to a translated statement from Mexico’s National Institute of Anthropology and History (INAH).Cobá was a major urban center in the Maya world and was occupied from around 350 B.C. to the 14th century. It had a core of elite houses built around four lakes, along with thousands of residential structures, numerous white stone roads and several pyramids.In 2024, archaeologists…

The Earth has just added its seventh confirmed quasi-lunar moon. It is 2025 PN7, a small Apollo-type asteroid detected in August solely by its brightness, thanks to the Hawaiian Pan-STARRS 1 telescope.After analyzing its trajectory, scientists concluded that the object maintains a 1:1 resonance with the Earth. In other words, it orbits the sun at the same time as our planet. From a distant perspective, this synchronicity makes it look as if the Earth is accompanied by a tiny asteroid—as if it had an additional moon.Unlike the moon, quasi-lunar moons are not gravitationally bound to the Earth. They are ephemeral…