What microscopic material found in Chang'e 5 samples indicates explosive volcanic activity?
Answer
Glass beads
Researchers identified tiny, spherical glass beads hidden within the lunar soil samples. These beads are formed during a process called fire fountaining, where lava with a high gas content erupts and sprays into the air, subsequently cooling rapidly to create spherical glass droplets. Their presence confirms that the Moon experienced explosive volcanism far later than the previously assumed cutoff point.
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Where did the Chang'e 5 mission land to retrieve lunar samples in 2020?What microscopic material found in Chang'e 5 samples indicates explosive volcanic activity?Approximately how old are the glass beads discovered in the Chang'e 5 samples?During which geological era on Earth was the Moon experiencing volcanic fire fountaining?What factor led scientists to believe the Moon had cooled rapidly after its formation?Which radioactive elements are proposed to possibly sustain heat in the lunar mantle?What process, absent on the Moon, is responsible for Earth's persistent internal heat?What gravitational interaction is considered a potential source of lunar volcanic heat?How does fire fountaining result in the creation of spherical glass beads?Why is it necessary to sample different locations on the Moon for future missions?