Tonga eruption was so intense, it caused the atmosphere to ring like a bell

Japanese submarine, sunk in WWII and later bombed by salvager, is VR ready | Tonga eruption was so intense, it caused the atmosphere to ring like a bell | Why does electricity make a humming noise? Created for {EMAIL} | [Web Version]( January 24, 2022 CONNECT WITH LIVESCIENCE  [Facebook]( [Twitter](  [LIVESCIENCE]( [LIVESCIENCE]( Amazing science every day [SIGN UP]( ⋅ [WEBSITE](  [] Top Science News [] [Japanese submarine, sunk in WWII and later bombed by salvager, is VR ready]( [Japanese submarine, sunk in WWII and later bombed by salvager, is VR ready]( (John McCarthy, CC_3.0) A new virtual-reality experience brings to life the wreck of a WWII Japanese submarine that almost met its demise twice; after the Allies sank it in 1942, the sub was then bombed with explosives 30 years later by an angry salvager who wanted its scrap metal. The VR video is based on a recent survey of the site. The wreck of the I-124 submarine, on the seafloor about 50 nautical miles (90 kilometers) northwest of the Australian city of Darwin, is protected as a war grave — roughly 80 crewmen were on board when it was sunk by Allied forces in 1942. Full Story: [Live Science]( (1/24) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Natural Disasters [] [Tonga eruption was so intense, it caused the atmosphere to ring like a bell]( [Tonga eruption was so intense, it caused the atmosphere to ring like a bell]( (NOAA) The Hunga Tonga-Hunga Ha'apai eruption reached an explosive crescendo on Jan. 15, 2022. Its rapid release of energy powered an ocean tsunami that caused damage as far away as the U.S. West Coast, but it also generated pressure waves in the atmosphere that quickly spread around the world. The atmospheric wave pattern close to the eruption was quite complicated, but thousands of miles away it appeared as an isolated wave front traveling horizontally at over 650 miles an hour as it spread outward. Full Story: [Live Science]( (1/24) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Life’s Little Mysteries [] [Why does electricity make a humming noise?]( [Why does electricity make a humming noise?]( (Christine_Kohler via Getty Images) You may have heard it when flipping on a light, switching on your TV or walking near power lines — that unmistakable hum of electricity. But what, exactly, is that hum? And more important, is it ever a sign of danger? The sound electricity makes is known as the "mains hum," and it happens because of the way electricity is produced. The electricity that comes from power plants uses alternating current (AC), so named because the current changes direction, or alternates, many times per second. Full Story: [Live Science]( (1/24) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Space Exploration [] [Watch the James Webb Space Telescope glide to its deep-space parking spot today]( [Watch the James Webb Space Telescope glide to its deep-space parking spot today]( (NASA) Today's the day: Nearly a month after launch, the James Webb Space Telescope will arrive at its deep-space celestial destination on Monday (Jan. 24). Webb will be orbiting Earth-sun Lagrange Point 2 (L2), which is about 930,000 miles (1.5 million kilometers) away from our planet. Here, the spacecraft can use a minimum of fuel to orbit thanks to its alignment with the sun and Earth. NASA will not be broadcasting from mission control during the burn, as the agency did for some previous key milestones. However, NASA plans to carry several follow-up events live today after executing the crucial burn at about 2 p.m. EST (1900 GMT). Full Story: [Live Science]( (1/24) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Math & Physics [] [The Higgs boson could have kept our universe from collapsing]( [The Higgs boson could have kept our universe from collapsing]( (MARK GARLICK/SCIENCE PHOTO LIBRARY via Getty Images) The Higgs boson, the mysterious particle that lends other particles their mass, could have kept our universe from collapsing. And its properties might be a clue that we live in a multiverse of parallel worlds, a wild new theory suggests. That theory, in which different regions of the universe have different sets of physical laws, would suggest that only worlds in which the Higgs boson is tiny would survive. Full Story: [Live Science]( (1/24) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] [Pi calculated to a record-breaking 62.8 trillion digits]( [Pi calculated to a record-breaking 62.8 trillion digits]( (Shutterstock) Researchers in Switzerland are set to break the record for the most precise value of the mathematical constant pi, after using a supercomputer to calculate the famous number to its first 62.8 trillion decimal places. Pi is the ratio of a circle's circumference to its diameter. The name "pi" comes from the 16th letter in the Greek alphabet and has been used by mathematicians to represent the constant since the early 18th century. The first 10 digits of pi are 3.141592653, but the constant is what is known as an irrational number, meaning that it cannot be expressed as a common fraction and has an infinite number of decimal places. Full Story: [Live Science]( (1/23) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Astronomy & Astrophysics [] [Saturn's 'Death Star' moon could have a secret underground ocean]( [Saturn's 'Death Star' moon could have a secret underground ocean]( (NASA/JPL/Space Science Institute) Scientists have found "compelling evidence" that Saturn's "Death Star" moon is hiding an ocean just beneath its surface, furthering the search for possible life in our solar system. Researchers say that Mimas, Saturn's smallest, innermost moon — whose resemblance to Star Wars' infamous battle station inspired its nickname — revealed the first clue that it could be a "stealth ocean world" after NASA's Cassini probe spotted a strange wobble in the moon's rotation. Full Story: [Live Science]( (1/23) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Curious Creatures [] [Here's why a new penguin colony in Antarctica is cause for concern]( [Here's why a new penguin colony in Antarctica is cause for concern]( (© Tomás Munita/Greenpeace) Scientists have discovered a previously unknown colony of gentoo penguins in one of the southernmost spots these waddling birds have ever been spotted. The discovery is a cause for concern, according to the researchers, who say that climate change is expanding the range of this temperate, non-ice-loving species of penguin. Full Story: [Live Science]( (1/24) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] That’s Strange! [] [Siege of top-secret Area 51 began as a joke. Officials prepared to use deadly force in response.]( [Siege of top-secret Area 51 began as a joke. Officials prepared to use deadly force in response.]( (Mario Tama/Getty Images) When a UFO enthusiast posted an event on Facebook about "storming" the military base known as Area 51, he meant it as a joke. However, it was no laughing matter to federal and state law enforcement, who readied a lethal response to prevent revelers from breaching the off-limits area, records recently revealed. Full Story: [Live Science]( (1/23) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Daily Quiz [] POLL QUESTION: Can nonhuman animals drive other animals to extinction? (Learn the answer [here]() [Vote]( [Yes]( [Vote]( [No](   [Sign Up]( | [Update Profile]( | [Unsubscribe]( [Privacy Policy]( | [Cookies Policy]( | [Terms and Conditions]( CONTACT US: [FEEDBACK](mailto:livescience@smartbrief.com) | [ADVERTISE]( Future US LLC © 1100 13th St. NW, Suite 1000, Washington, DC 20005