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Yahoo
33 minutes ago
- Yahoo
Earth will spin faster on July 22 to create 2nd-shortest day in history
When you buy through links on our articles, Future and its syndication partners may earn a commission. Earth will complete a full rotation in slightly less time than usual on Tuesday, July 22, making it one of the shortest days ever recorded. The difference will be just 1.34 milliseconds less than the standard 24 hours — not something you'll notice — but it's part of a puzzling trend in Earth's rotational behavior that has been unfolding in recent years. If it continues, a second may need to be subtracted from atomic clocks around 2029 — a so-called negative leap second, which has never been done before. The speed of Earth's rotation isn't fixed. Long ago, a day was much shorter than the 24 hours — or 86,400 seconds — we're now accustomed to. According to a 2023 study, a day on Earth was approximately 19 hours for a significant part of Earth's early history, due to a balance between solar atmospheric tides and lunar ocean tides. However, over deep time, a day on Earth has become consistently longer. The primary culprit has been tidal friction from the moon, which has caused it to gradually move farther away from Earth. As it moves away, the moon saps Earth's rotational energy, causing Earth's rotation to slow and days to lengthen. So why the sudden reverse? From when records began (with the invention of the atomic clock) in 1973 until 2020, the shortest day ever recorded was 1.05 milliseconds less than 24 hours, according to But since 2020, Earth has repeatedly broken its own speed records. The shortest day ever measured occurred on July 5, 2024, when Earth's rotation was completed 1.66 milliseconds faster than usual. Looking ahead to 2025, scientists predicted that July 9, July 22, and Aug. 5 could be the shortest days of the year. However, new data suggests that July 10 took the lead as the shortest day so far in 2025, clocking in at 1.36 milliseconds less than 24 hours. On July 22, Earth is expected to complete its spin 1.34 milliseconds early, making it a close runner-up. If current predictions hold, Aug. 5 will be about 1.25 milliseconds shorter than usual, leaving July 22 as the second-shortest day of the year. There are signs the acceleration may be easing. The rate of decrease in day length appears to be slowing, but the underlying cause of the recent rotational changes remains elusive. One 2024 study suggested that the melting polar ice and rising sea levels may be influencing Earth's spin. However, rather than driving the acceleration, this redistribution of mass might be moderating it. A more likely culprit is deep below our feet — the slowing of Earth's liquid core, which could be redistributing angular momentum in a way that makes the mantle and crust spin slightly faster. "The cause of this acceleration is not explained," Leonid Zotov, a leading authority on Earth rotation at Moscow State University, told "Most scientists believe it is something inside the Earth. Ocean and atmospheric models don't explain this huge acceleration." Zotov predicts Earth's rotation may soon decelerate once again. If he's right, this sudden speeding-up could prove to be just a temporary anomaly in the planet's long-term trend toward slower rotation and longer days.
Yahoo
44 minutes ago
- Yahoo
What to know about the CEO caught embracing an employee on the jumbtron at a Coldplay concert
LONDON (AP) — A routine moment of crowdwork at a Coldplay concert went viral last week when a couple tried to avoid the spotlight after they were caught hugging on the jumbotron. Internet sleuths quickly figured out that they were the CEO and chief people officer of a little-known tech company called Astronomer. The snippet of video set the internet alight, fueling a wave of memes and drawing attention to the erosion of privacy in public spaces. Here are some things to know: What happened at the concert During the concert on Wednesday at Gillette Stadium in Foxborough, Massachusetts, lead singer Chris Martin asked the cameras to scan the crowd for his 'Jumbotron Song,' when he sings a few lines about the people the camera lands on. A man wearing a birthday sash was up first. Two people in banana costumes were highlighted. But in between, something unexpected happened. For several seconds, a couple was shown on the big screen. They were cuddling and smiling, his arms wrapped around her, as she leaned back into him. When they saw themselves on the big screen, her jaw dropped, her hands flew to her face and she spun away from the camera. He ducked out of the frame, as did she. 'Either they're having an affair or they're just very shy,' Martin joked. It didn't end there. Who was involved After the video went viral, the internet got to work. Online sleuths rapidly figured out that the man was Andy Byron, chief executive officer, while she was Kristin Cabot, the chief people officer — in other words, the head of human resources. Astronomer, based in New York, provides big companies with a platform that helps them organize their data. The company at first said little about the incident. In response to an initial inquiry from The Associated Press, Astronomer's spokesman said only that a statement attributed to Byron that circulated online immediately after the incident was a 'fake from a clearly labeled parody account.' The company later confirmed the identities of the couple in a statement to AP. What happened to the CEO In the hours after the video went viral, Byron's name was at one point the most searched term on Google. Astronomer eventually addressed the situation, announcing in a LinkedIn post that Byron had been placed on leave and that the board of directors had launched a formal investigation. The company said a day later that Byron had resigned, and that its cofounder and chief product officer, Pete DeJoy, was tapped as interim CEO while it searches for Byron's successor. 'Astronomer is committed to the values and culture that have guided us since our founding. Our leaders are expected to set the standard in both conduct and accountability, and recently, that standard was not met,' the company said in its post on LinkedIn. Most concert venues warn attendees that they can be film ed It's easy to miss, but most concert venues have signs informing the audience that they could be filmed during the event. Look for them on the walls when you arrive and around the bar areas or toilets. It's common practice especially when bands like to use performances for music videos or concert films. The venue in this case, Gillette Stadium in Foxborough, also has a privacy policy online which states: 'When you visit our location or attend or participate in an event at our location, we may capture your image, voice and/or likeness, including through the use of CCTV cameras and/or when we film or photograph you in a public location.' Once captured, a moment can be shared widely In the internet age, such videos — or ones taken on someone's smartphone — can quickly zip around the world. This video rocketed around social media, as people speculated about why the couple dodged the camera. Empathy for the pair and their families was mixed with plenty of snarky commentary and countless memes, with the fake statement from the chief executive generating a lot of additional vitriol. And news reports said that Byron's LinkedIn account was disabled after it was flooded by a wave of comments. 'It's a little bit unsettling how easily we can be identified with biometrics, how our faces are online, how social media can track us — and how the internet has gone from being a place of interaction, to a gigantic surveillance system," said Mary Angela Bock, an associate professor in the University of Texas at Austin's School of Journalism and Media. "We are being surveilled by our social media. They're tracking us in exchange for entertaining us.' _____ AP Business Writer Wyatte Grantham-Philips contributed to this report from New York. Kelvin Chan And Hilary Fox, The Associated Press
USA Today
an hour ago
- USA Today
What are sounding rockets? NASA launch from New Mexico studies sun's mysterious chromosphere
States like Florida, Texas and California are no strangers to rocket launches, but spaceflights in New Mexico may often be overlooked. Here's what's happening in the desert. States like Florida, Texas and California are no strangers to routine rocket launches − but New Mexico? Spacecraft also sometimes get off the ground from the state. Space news coverage may be headlined by crewed missions to the International Space Station from Cape Canaveral or SpaceX's latest test of its enormous Starship spacecraft from the Lonestar State. But in the oft-overlooked state of New Mexico, smaller rockets often get off the ground from a NASA test site in the remote desert. The latest of the spacecraft, known as sounding rockets, most recently made a successful quick trip to space to study one of the most complex regions of the sun's atmosphere following a New Mexico launch. Here's everything to know about sounding rockets and the latest NASA mission from New Mexico near the Texas border. NASA launches sun-studying mission from White Sands, New Mexico The latest sounding rocket mission in New Mexico got off the ground around 3 p.m. local time Friday, July 18, at NASA's White Sands Space Harbor in New Mexico, located near the border of Texas about 60 miles north of El Paso. Residents in the local area around White Sands may have been able to spot the sounding rocket and its contrail when it launched, a NASA spokesperson confirmed to USA TODAY. The mission was expected to last no more than about 15 minutes, NASA said in a press release. After launching, the sounding rocket took about 90 seconds to reach space and point toward the sun, another eight minutes to conduct the experiment on the chromosphere, and no more than five minutes to return to Earth's surface. Upon landing, the rocket was expected to drift between 70 to 80 miles from the launchpad so mission operators on the ground could ensure it would land safely in the large, empty desert, according to NASA. What are sounding rockets? NASA's sounding rocket program has for more than 40 years carried out missions to launch scientific instruments into space. Sounding rockets are much smaller than an average spacecraft that may launch on an orbital flight from major spaceports like the Kennedy Space Center in Florida or the Vandenberg Space Force Base in Southern California. NASA's fleet of sounding rockets range anywhere in height from about 16 feet tall to about 70 feet tall. The Black Brant IX, the sounding rocket selected for the most recent launch from New Mexico, stands nearly 60 feet tall. For comparison, SpaceX's famous two-stage Falcon 9 rocket – one of the world's most active for both human and cargo missions alike – stands at 230 feet tall when fully stacked. And the commercial spaceflight company's Starship megarocket, which is still in development, stands at an imposing 400-feet tall when both the crew capsule and Super Heavy rocket booster are integrated. Because of their diminutive stature, NASA says soundings rockets are ideal for quick trips at lower speeds to regions of space that are too low for satellites and other spacecraft to conduct observations. And because sounding rockets don't require expensive boosters, missions costs also tend to be substantially less than other orbiter missions, according to the space agency. Where does NASA launch sounding rockets? Missions occur in Virginia, Alaska, New Mexico Of the approximately 20 sounding rocket missions scheduled in the U.S. in 2025, most get off the ground from NASA's Wallops Flight Facility in Virginia and the Poker Flat Research Range in Alaska. Occasionally, though, a sounding rocket will launch from a missile range at the White Sands Space Harbor in New Mexico. Prior to July 18, the most recent mission at White Sands came Nov. 23, 2024, when NASA launched a Black Brant IX sounding rocket to test a spacecraft's performance in Earth's low-density magnetosphere. The next sounding rocket mission is scheduled for Aug. 12 from Wallops Island in Virginia, according to NASA. Spacecraft studied solar chromosphere For the latest mission from White Sands, a Black Brant IX sounding rocket carried new technology to study the sun's mysterious chromosphere, located between the sun's visible surface, known as the photosphere, and its outer layer, the corona. The corona, which became widely visible from Earth in April 2024 during a total solar eclipse, is a region where powerful solar flares and coronal mass ejections can erupt to cause space weather that can disrupt Earthly technologies. NASA's SNIFS mission aimed to learn more about these events by observing how energy is converted and moves through the chromosphere to power such explosions. The mission was the first to carry technology combining a standard imager to capture photos and videos with a spectrograph, which dissects light into its various wavelengths, according to NASA. This reveals which elements are present in the imaged light source. Eric Lagatta is the Space Connect reporter for the USA TODAY Network. Reach him at elagatta@
