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☆ A series of earthquakes has Southern California shook. Is a big one coming?
▼ + stars: | 2024-10-16 | by ( Stephanie Elam | ) edition.cnn.com time to read: +6 min

One more thing Southern California is known for: earthquakes. While the San Andreas is the most famous, scientists know it’s not the only fault that can produce a powerful earthquake in Southern California. Residents clean up in the Van Nuys neighborhood following the 1994 Northridge earthquake in Los Angeles on January 17, 1994. Many newcomers have no idea the havoc a big earthquake can wreak, including young Angelinos who grew up in Southern California‘s quiet times. “We need to be prepared, because we could have an earthquake that’s pretty big at any time,” Husker said.

Persons: there’s, ”, Kate Scharer, Andreas, it’s, Robert de Groot, Vinnie Zuffante, Angelinos, They’ve, ” Allen Husker, “ There’s, Husker, Clarence Wayne Dean, Douglas C, ” Scharer, Scharer, Don’t, “, de Groot, ” Husker Organizations: Los Angeles CNN, Pasadena, United States Geological Survey, Geological Survey, California Institute of Technology, Southern California Seismic, CNN, Los Angeles Police, Disease Locations: Hollywood, Southern California, Los Angeles, Malibu, San Gabriel, Sierra, Van Nuys, Los Angeles County, Southern, California, California , Oregon, Washington

☆ The moon is shrinking, and it could be a problem for astronauts
▼ + stars: | 2024-01-31 | by ( Jacopo Prisco | ) edition.cnn.com time to read: +8 min

On the lunar surface, however, it’s a different story. “We also knew that the largest of the shallow moonquakes detected by the Apollo seismometers was located near the south pole. As part of the mission, two astronauts will spend about a week living and working on the lunar surface. They can be an opportunity to better study the moon as we do on the Earth with earthquakes,” Husker said. Studying moonquakes at the south pole will tell us more about the Moon’s interior structure as well as its present-day activity.”

Persons: India’s, Russia’s Luna, Artemis, ”, Thomas R, Watters, ” Watters, LRO, “, Renee Weber, ” Weber, Weber, Yosio Nakamura, Nakamura, Allen Husker, Husker, Jeffrey Andrews, Hanna Organizations: CNN, NASA, National Air, Space Museum’s, for, Planetary Studies, Lunar, Science, Apollo, University of Texas, California Institute of Technology, University of Arizona Locations: China, Austin

☆ Small moonquakes caused by Apollo lunar lander module, study finds
▼ + stars: | 2023-09-14 | by ( Jackie Wattles | ) edition.cnn.com time to read: +6 min

CNN —A spacecraft left behind by US astronauts on the lunar surface could be causing small tremors known as moonquakes, according to a new study. The lunar surface is an extreme environment, oscillating between minus 208 degrees Fahrenheit (minus 133 degrees Celsius) in the dark and 250 degrees Fahrenheit (121 degrees Celsius) in direct sun, according to a news release about the study. Marusiak was not directly involved in the study, though she did have contact with the authors as a fellow expert in lunar seismology. “Every lunar morning when the sun hits the lander, it starts popping off,” said study coauthor Allen Husker, a research professor of geophysics at Caltech, in a statement. It’s important to note a key difference between the moon and Earth: On the lunar surface, there are no shifting tectonic plates that might cause catastrophic events.

Persons: Francesco Civilini, Artemis, Dr, Angela Marusiak, Marusiak, moonquakes Marusiak, “, —, ”, Allen Husker, I’m, seismometers, ” Marusiak, ” Husker Organizations: CNN, of Geophysical Research, California Institute of Technology, NASA Goddard Space Flight, NASA, University of Arizona’s, Laboratory, Caltech, Indian Space Research Organization, ISRO Locations: California

☆ Mysterious tremors on the moon have been traced back to an unexpected source
▼ + stars: | 2023-09-13 | by ( Marianne Guenot | ) www.businessinsider.com time to read: +5 min

Data showed a mysterious quake happening every lunar morning, and scientists weren't sure why. A new study has found morning tremors are coming from the Apollo 17 lunar lander base. They discovered that some of the tremors were being produced by the descent stage of the Apollo 17 lunar module, left behind on the lunar surface 51 years ago. AdvertisementAdvertisementBut each morning, scientists also saw bizarre waves popping up every few minutes. By triangulating the signal, they were able to figure out the source of the mysterious tremors.

Persons: Allen Husker, —, seismometers, Harrison H, Schmitt It's, Husker, Francesco Civilini, Renee Weber, it's, It's Organizations: Service, NASA, California Institute of Technology, Caltech, NASA Marshall Space, CalTech Locations: Wall, Silicon

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