Il y a 8 mois.

Did you know that early engineers measured early computing devices in (Yes, it's a real unit of measurement.) And by the time the first supercomputer arrived in 1965, scientists needed a larger unit. Thus, FLOPS, or floating point operations was born. Click the link in our profile to learn how women became the world's first "supercomputers." #TBT

Il y a 8 mois.

Hubble eyes a powerful galaxy with a name that is password worthy Not all galaxies have the luxury of possessing a simple moniker or quirky nickname. This impressive galaxy imaged by the NASA/ESA Hubble Space Telescope is one of the unlucky ones, and goes by a name that looks more like a password for a computer: 2XMM J143450.5+033843. (That name doesn't exactly roll off the tongue!) Such a name may seem like a random jumble of numbers and letters, but like all galactic epithets it has a distinct meaning. This galaxy, for example, was detected and observed as part of the second X-ray sky survey performed by ESA’s XMM-Newton Observatory. Its celestial coordinates form the rest of the bulky name, following the “J”: a right ascension value of 14h (hours) 34m (minutes) 50.5s (seconds). This can be likened to terrestrial longitude. It also has a declination of +03d (degrees) 38m (minutes) 43s (seconds). Declination can be likened to terrestrial latitude. The other fuzzy object in the frame was named in the same way — it is a bright galaxy named 2XMM J143448.3+033749. 2XMM J143450.5+033843 lies nearly 400 million light-years away from Earth. It is a Seyfert galaxy that is dominated by something known as an Active Galactic Nucleus — its core is thought to contain a supermassive black hole that is emitting huge amounts of radiation, pouring energetic X-rays out into the Universe. Photo credit: ESA/Hubble & NASA #nasagoddard #science #space #Hubble #galaxy

Il y a 8 mois.


Il y a 8 mois.

Tigers are the largest species of big cat in Asia. Relying primarily on sight and sound rather than smell, they are solitary hunters who tend to stalk their prey at night. Large ungulates---hoofed mammals such as wild boar, deer, elk, and water buffalo---make up the majority of their diet and a tiger can consume up to 88 pounds of meat at one time. On average, tigers give birth to two or three cubs every two years. If all the cubs in one litter die, a second litter can be produced in as little as five months. Tigers face unrelenting pressures from poaching and habitat loss and are forced to compete for space with dense and often growing human populations. More money has been spent on tiger conservation than on preserving any other species in the world, yet wildlife biologists have been seemingly unable to stop the decline of the iconic big cat in the face of poaching and habitat loss. Researchers now use "camera traps"—cameras linked to a triggering mechanism—to estimate tiger populations. This is effective for counting tigers because every tiger has a unique pattern of stripes, which allows individuals to be identified. #tiger #amnh #biodiversity #bigcat #tigers #tigers #tigercub #feline #predator #naturalhistory #tiger???? #tigercubs

Il y a 8 mois.

OMS : les défis du docteur Tedros https://t.co/zBexQZfZEb


Il y a 8 mois.

Mexico’s first HA-class gas turbines are coming to a #powerplant in Topolobampo (Topo as the locals call it). #GE employees in the U.S. and Mexico are working to bring two of our highly efficient 7HA.01 gas turbines to Topo. These turbines will work in tandem with a steam engine, three generators and two heat recovery steam generators, producing enough energy to efficiently power 2.5 million Mexican homes. Better energy systems means greater #globalimpact.

Il y a 8 mois.

July 4 fireworks came early when a NASA Terrier-Improved Malemute sounding rocket was successfully launched at 4:25 a.m., Thursday, June 29, from the agency’s Wallops Flight Facility in Virginia. During the 8-minute flight, 10 canisters about the size of a soft drink can were ejected in space, 6 to 12 miles away from the 670-pound main payload. The canisters deployed blue-green and red vapor that formed artificial clouds visible from New York to North Carolina. During an ionosphere or aurora science mission, these clouds, or vapor tracers, allow scientists on the ground to visually track particle motions in space. The development of the multi-canister ampoule ejection system will allow scientists to gather information over a much larger area than previously possible when deploying the tracers just from the main payload. Credit: NASA/Wallops #nasagoddard #rocket #4thofJuly #science


Il y a 8 mois.

Get out your telescopes! Jupiter is prominent in the night sky this month along with bright stars of the summer triangle. The waxing Moon returns to Jupiter’s vicinity in the southern sky on the evening of Friday June 30th. The pair will appear during evening twilight with a five degree angular separation, and the span diminishes as hours pass. If your sky is clear it will be a good evening to telescopically explore a lovely scene—the nearly first quarter Moon, Jupiter, its four major satellites, and the star Porrima in the constellation Virgo. Until the start of this century Porrima was a showpiece double star, separable into its components even in modest backyard telescopes. However, the pair was at closest orbital separation in 2007, and currently requires a substantial telescope to resolve. We’ll have to wait about half a decade before this binary again appears as two stars in most telescopes. Third magnitude Porrima will be positioned just east of the dark lunar edge during early evening of June 30, later it will be occulted behind the eastward orbiting Moon at about 10:50 p.m. for observers in New York City. At about 11:55 p.m. EDT, the Moon moves past the star’s direction, but emerging at the bright lunar limb, seeing Porrima then will be a challenge. #jupiter #amnh #planet #astronomy #cosmos #nightsky #nasa #naturalhistory #gasgiant

Il y a 8 mois.


Il y a 8 mois.

Des hiéroglyphes égyptiens de 5 200 ans et autres infos scientifiques https://t.co/nFo1serXkR


Il y a 8 mois.

Episode #232: This device can save you or your loved one from choking. To order from Amazon: https://t.co/klqJbSHmv8 https://t.co/WxxkirjzEe


Il y a 8 mois.

Who says cooking isn't Today, @jettila was our guest in the @saveurmag Test Kitchen, showing off the science behind making rice noodles from scratch. See more on our IG Stories and visit Facebook.com/PopSci to watch a fun (live) cooking demo. ????????????‍????#101asiandishes

Il y a 8 mois.

How can #transportation make a #globalimpact? Our work with Pakistan is just one example. Pakistan’s #railsystem needed a serious update—most of its rail equipment hasn’t been updated since 1950. So we’re providing the power of our EVOs, the 4,500-horsepower #locomotives that can go farther and faster on less fuel. We couldn’t do it without #engineers working together from across the globe. From assembly in Erie, PA to getting the EVOs up and running in Karachi, Pakistan we’re helping modernize the country’s infrastructure and boost its economy. Swipe through to see the EVOs’ fuel efficient journey. #railfan

Il y a 8 mois.

L’étude du génome humain, un casse-tête plus coriace que prévu https://t.co/R3TKj9ZVEK



Il y a 8 mois.

Episode #231: Make your eggs totally different with this cylindrical egg maker. To order from Amazon:… https://t.co/8iX1iYbLC2


Il y a 8 mois.


Il y a 8 mois.

Don't be fooled by the cupcake-like object below-- it's #TrilobiteTuesday! One of the most prolific Silurian trilobite zones in North America can be found beneath the rugged yet picturesque landscape of remote Anticosti Island, Quebec. Surrounded by the surging waters of the Gulf of St. Lawrence, it takes a hearty soul to reach this densely forested, decidedly out-of-the-way locale. But such a venture is apparently well worth the effort for those with a true Paleozoic passion. Not only are the 6,000 foot thick sedimentary layers of Anticosti bursting with fossils-- in some spots they're quite literally falling out of the cliff-sides-- but many of the trilobite specimens so-far discovered, including Diacalymene schucherti (seen here as an enrolled specimen), Failleana magnifica and Arctinurus anticostiensis, provide solid evidence that back some 430 million years ago this was home to a megafauna, one filled with trilobites of unusual size and spectacular preservation. After a major 2004 scientific revision, 52 trilobite species have now been recognized from Anticosti's rich Silurian layers, comprising an impressive 30 genera. And while material from such formations as the Jupiter and Gun River may not be as well known to either scientists or collectors astrilobites from more renowned North American locales, as more academic and commercial expeditions head to this craggy outpost, Anticosti Island's status as a trilobite haven seems destined to steadily increase. #paleozoic #trilobite #trilobites #amnh #fossil #fossils #naturalhistory #anticosti #anticostiisland

Il y a 8 mois.

In honor of National Nature Photography Day, we put together a gallery featuring the #PopSci staff's favorite pictures we've taken during adventures in #thegreatoutdoors. And we also asked you—our glorious readers and 'grammers—to show us your best nature photos using #popscilovesnature here on Instagram. Boy did you deliver! Visit our #linkinbio to see some of our favs (like this beauty courtesy of @adventuresforalways). And keep sending us your photos and videos all summer long for your chance to be featured. by using our hashtag, you're giving us the right to re-post your images on our social channels or website.**}

Il y a 8 mois.

NASA Captures Hurricane Dora at Peak Strength, Before Weakening Began -- At 19:36 UTC (3:36 p.m. EDT) on June 26, the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite provided a visible-light image of Hurricane Dora. The VIIRS imagery showed a small hurricane with a visible pinhole eye surrounded by a thick band of powerful thunderstorms. That strength didn't last long as Dora moved over cooler waters and began to weaken early on June 27. Dora appeared degraded in satellite imagery as strong convection and thunderstorms were diminishing, although the storm still maintained a visible eye. At 11 a.m. EDT (1500 UTC) on Tuesday, June 27, Dora's maximum sustained winds have decreased slightly to near 75 mph (120 kph) with higher gusts. Dora is a small tropical cyclone, as hurricane-force winds extended outward up to 15 miles (30 km) from the center. The NHC said the eye of Hurricane Dora was located near latitude 19.3 degrees north and longitude 110.2 degrees west. That's about 250 miles (400 km) south of the southern tip of Baja California, Mexico. Dora was moving toward the west-northwest near 13 mph (20 kph). The NHC said the center of #Dora is expected to pass just north of Socorro Island later today, and remain well south of the #Baja California Peninsula. Ocean swells generated by Dora are affecting portions of the coast of southwest #Mexico and are expected to spread northwestward and begin affecting portions of the coast of the southern Baja #California peninsula through Wednesday, June 28. Dora is moving over sea surface temperatures cooler than 26.6 degrees Celsius or 80 degrees Fahrenheit, which is the threshold to maintain a tropical cyclone. Temperatures cooler than that weaken tropical cyclones. The NHC said that the waters beneath Dora will continue to cool for the next couple of days so Dora is expected to weaken to a tropical storm later today, June 27, and degenerate to a remnant low pressure area over the next two days. Credit: NASA/NOAA #nasagoddard #Hurricane #weather #science #space

Il y a 8 mois.

« Au sujet des vaccins, l’obligation n’est pas la solution » https://t.co/ug4E1MmjTd