1. Size and Intensity of the Explosion:
* Small Explosion: A small explosion, like a detonated rocket engine or a meteorite impact, wouldn't be visible from Earth. The light and debris would be too faint to be seen against the vastness of space.
* Large Explosion: A large-scale explosion, like a nuclear detonation, could potentially be visible from Earth. The flash of light and debris cloud could be bright enough to be seen with telescopes or even the naked eye, depending on the size and intensity of the blast.
2. Time of Day and Moon Phase:
* Daytime: It would be much harder to see an explosion during the day, as the sunlight would overwhelm any light from the blast.
* Nighttime: During a new moon phase (when the moon is not illuminated by the sun), the explosion would be easier to see because there is less light from the moon itself.
3. Location on the Moon:
* Facing Earth: An explosion on the side of the Moon facing Earth would be much more likely to be seen.
* Far Side of the Moon: An explosion on the far side of the Moon would be hidden from Earth and impossible to see directly.
4. Observation Tools:
* Telescopes: Powerful telescopes, especially those designed for astronomy, could detect the light and debris from even a moderate explosion.
* Naked Eye: A very large and powerful explosion might be visible with the naked eye, but this is unlikely.
In summary:
* Small Explosions: Very unlikely to be visible from Earth.
* Large Explosions: Potentially visible, especially at night, during a new moon, and if the explosion occurs on the side of the Moon facing Earth.
It's important to note that the visibility of an explosion on the Moon would depend on a combination of factors, and even a large explosion might not be easily seen without powerful telescopes.
