Can the gravity from the Moon trigger a volcano eruption? Possibly. But will it trigger Mount Mayon in the Philippines tonight? Let me check the Magic 8-ball... signs say no. Here's why.
A BBC report report this morning says that "experts" -- no names, affiliations, or quotations were given -- are concerned that the full Moon may trigger an eruption of the Philippine volcano Mount Mayon. It's a very active volcano and ripe for an event. It could blow any time now. So is there cause for concern given the full Moon tonight? I'm gona go with "no". The gravity of the Moon does affect the Earth, of course, mostly through tides. As it happens, tides are strongest when the Moon is full (and when it's new as well, which the article doesn't mention), so there is at least some reason to investigate this. And the BBC report says that ...