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Scientists have made a surprising discovery about the largest earthquake detected on Mars, while millions of Californians were startled by an early earthquake alert test. The source of the Marsquake, which had a magnitude of 4.7, has astounded researchers. Meanwhile, a premature test of the MyShake alert system on cellphones caused many residents to be jolted awake in California. The test, scheduled for later in the day, was sent seven hours early due to a time zone mix-up. The U.S. Geological Survey confirmed the incident and clarified that it was a test. The test has raised concerns about the stress caused by such alerts.
Some people may have been startled by a test earthquake alert on their phones seven hours earlier than expected -- at 3:19 a.m. -- as part of the Great California ShakeOut. Here's what went wrong. https://t.co/ytXQmu6UzF https://t.co/4eMHR9ytC4
Why a 3,000 mile-long jet stream on Jupiter surprised NASA scientists https://t.co/N2YjLBhbt3
Some West Coast residents were jolted awake at 3:19 a.m. on Thursday when they received an earthquake alert test that was sent to their cellphones seven hours early because of a time zone mix-up, the U.S. Geological Survey said. https://t.co/V1pcwmdnaK
I think the @MyShakeApp alerts are more stressful than the actual earthquake. 😳😳😳🤔 https://t.co/jlrC2Xed0D
The internet was beside itself Thursday after a test of the quake warning system. https://t.co/pWlEsfcJMm
About that middle-of-the-night ShakeAlert test that jolted Californians awake ... https://t.co/BKe7n5fR84 #earthquake #warning
LIVE VIDEO: @gingerconejero is live at 6:36 with the latest on potentially millions of people being startled awake this morning by a premature test of the MyShake alert on their cellphones. https://t.co/ySKffJPwOi https://t.co/jMpPRpi4Of
LIVE VIDEO: Potentially millions of people were startled awake this morning by a premature test of the MyShake alert on their cellphones. @gingerconejero is live at 5:36 with the details. https://t.co/ZNeV1XruMm https://t.co/Qiask7JQ8m
Did you get a MyShake test too early? Potentially millions of people were startled awake this morning by a premature alert on their cellphones ahead of the Great ShakeOut drill scheduled for later today. https://t.co/4MdF2lNkdU https://t.co/3iqY7ML5dp
Mars chilled for aeons, but stayed so stressed it gets crusty marsquakes https://t.co/zR0W3Ip9nx
In a significant step closer to better understanding Martian seismic activity, scientists have discovered the source of the largest quake yet recorded on Mars https://t.co/81I27aPkCU https://t.co/j68Pad9E6h
Marsquake: Scientists surprised by the source of the largest 4.7 magnitude quake detected on Mars https://t.co/81I27aPkCU https://t.co/JCTc6Or1a0
A 4.2 magnitude earthquake was felt across California's Sacramento County and parts of the Bay Area on Wednesday morning, according to the USGS. https://t.co/pBLIktcQ73
Why Bay Area earthquake alert estimate was high – NBC Bay Area https://t.co/nbxMVhvsKk
Why was the earthquake alert estimate significantly higher than the actual 4.1 magnitude temblor? A scientist explains: https://t.co/sQRUAgZHuk
BREAKING: A magnitude 4.1 earthquake, centered in Sacramento County, shook parts of the region and set off alarms on the phones of many Bay Area residents last hour.
Did you get a warning for a 5.7-magnitude earthquake, when it turned out to be a 4.1? Here's what's going on: https://t.co/t7RFyR825H @CF0nstein
#BREAKING UPDATE: The USGS downgrades the Sacramento County earthquake to 4.1 magnitude. Live coverage: https://t.co/qFUK0UIkiL
#BREAKING: A preliminary 4.6 magnitude earthquake strikes in Sacramento County on Wednesday, according to the USGS. Live coverage: https://t.co/G0VnlwP2M4 https://t.co/UkPnfMMisk
4.6 earthquake just moments ago in Isleton, CA. No shaking felt here in Davis just 25 miles from the epicenter. Did you feel shaking? https://t.co/XnKDM9upaF
4.6 earthquake just moments ago in Isleton, CA. No shaking felt here in Davis just 25 miles from the epicenter. https://t.co/8pyeM56GLu
Got the phone alert, but didn’t feel much in Danville… Preliminary magnitude 4.6 near Isleton #BayAreaearthquake https://t.co/MpZ8eikNeR
Wow! we just had an earthquake, felt in SF Richmond District and an alert popped up on my phone . https://t.co/iWAPPWN7jY
Just got an ear-splitting earthquake alert on my phone in San Francisco. Didn’t feel anything. Others?
The MyShake app alert is truly heart attack inducing.
Scientists surprised by source of largest quake detected on Mars https://t.co/vjiXO4n6gE https://t.co/C1EtFH3bTA
Scientists Surprised By Source of Largest Quake Detected on Mars https://t.co/JycRKvTqMD