Posted on 09/15/2023 9:09:45 AM PDT by JSM_Liberty
A spacecraft left behind by US astronauts on the lunar surface could be causing small tremors known as moonquakes, according to a new study.
Researchers revealed the previously unknown form of seismic activity on the moon for the first time through an analysis of Apollo-era data using modern algorithms.
Massive temperature swings that occur on the moon can cause human-made structures to expand and contract in a way that produces these vibrations, the report suggests. 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 noted that every Apollo mission carried instruments for detecting moonquakes. But the Apollo 17 mission, launched in 1972, was noteworthy because it left behind an array of seismometers capable of detecting thermal moonquakes — or the tremors induced by the drastic heating and cooling of the lunar surface. “Thousands of these signals were recorded during an 8-month span from 1976 to 1977 on four seismometers deployed during the Apollo 17 Lunar Seismic Profiling Experiment, but the poor quality of data makes analysis difficult,” the researchers wrote. ... Scientists revisited the data for the first time in decades. The fresh analysis allowed the research team to conclude that a certain type of moonquake — called an impulsive thermal moonquake — did not come from natural sources but rather from the nearby spacecraft heating and cooling.
“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. “Every five to six minutes (there was) another one, over a period of five to seven Earth hours.
...
(Excerpt) Read more at cnn.com ...
Moonquakes? Here on earth we call them farts.
and a Scientific American article
Thanks for nothing. How many taxpayer dollars were wasted determining this?
Pretty soon, it will be causing global warming on Earth.
Wow those are some pretty sensitive instruments to detect that type of activity.
“How many taxpayer dollars were wasted determining this?”
Lol.
https://www.aulis.com/apollo17_ascent2.htm
https://www.aulis.com/rover_fenders.htm
https://www.aulis.com/apollo17_ascent.htm
Didn’t go to the moon?
Flat earthers?
Klaxon Blast... Wrong Answer...
Since the moon is tidally locked in its orbit around the Earth, a lunar morning occurs once every lunar month, about 29.5 days.
Other than WASTING $$$$$, why would someone suddenly after 46 or 47 YEARS decide to review data about moonquakes?
Sounds like someone got a “new” mathematical model to PLAY WITH and had time to kill so they ran the numbers. I would assume the data was previously reviewed and the same conclusion was obtained.
The fact that this finding was published is VERY ODD.
The moon crust must be pretty fragile or the sensors are very close to the lander for it to be that detectable.
So the “natural” moon quakes are so slight that the trivial thermal contraction of the lander creates a greater signal on the nearby seismometers.
Are you sad those dollars weren't available for legitimate expenses such as paying people to not work, paying to put illegal alien and terrorist invaders up in premium hotels, and paying them thousands of dollars every month?
Where do you want the money spent? Show trials? Weaponized DOJ/FBI? Armed IRS? CRT training for military? Gender transitions of 3 year olds? Or what?
Can a couple of pounds of aluminum foil REALLY cause a spacial body that size to tremor?
As I’ve said before — we have technology that is far more sensitive than ever before. Worthless noise in the big picture. But keep spending us further into oblivion I guess.
Impossible! Apollo 17 could not have made it through the Van Allen Radiation Belt. /s
Vehicles are fine—the people are the problem:
https://www.aulis.com/traj_craft.htm
https://www.aulis.com/orion_vanallens.htm
OK, who left their Disco mix tape running in the cassette data recorder?
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