Astronomy for Young Folks, by Isabel Martin Lewis, Part 7
Boring Books for Bedtime Readings to Help You Sleep
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The Effects of Volcanic Activity on the Moon
Only volcanic activity on an enormous scale would be plainly visible to us, even with the powerful telescopes at our command. Ordinary eruptions such as occur on our own planet would be very difficult to detect. The problem of detecting changes on the Moon is complicated by the fact that a change of illumination greatly alters the appearance of all lunar markings.
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