Activity for geekman‭

Type	On...	Excerpt	Status	Date
Question	—	What's the biggest, most spectacular asteroid collision the moon could save us from? An asteroid collision big enough and fast enough to see a massive ejection of rock and moon-chunks, from the surface of the earth AND not wipe out the population of the planet. What size and speed of asteroid would it take to have a majorly visible and spectacular impact on the moon? What after ef... (more)	—	almost 6 years ago