Today in 1883, Planet Earth suffered the greatest explosion in recorded history when Krakatoa, a volcano in present-day Indonesia, blew up several times in a row. Wonder what that would have looked like from space!
Speaking of space, on this day in 1962, Mariner 2 was launched on its voyage to Venus; it would become the first spacecraft to visit a planet. Which brings up an interesting question. Are there volcanoes on other planets? Yes, there are even some on Venus!