4 ms·

I read it. It doesn't make a difference that majority of meteors burn in atmosphere and barely hit Earth surface. Oumuamua may have traveled through earth atmos

I read it. It doesn't make a difference that majority of meteors burn in atmosphere and barely hit Earth surface. Oumuamua may have traveled through earth atmosphere and hit Earth undamaged. The difference is obviously like day and night.

saagarjha 8y ago
This does not meaningfully change the result; as far as I'm aware you can just change the A/B ratio to account for the density of the atmosphere and treat it as any another layer. Even accounting for this, speed does not have a meaningful effect.
dragonwriter 8y ago
> It doesn't make a difference that majority of meteors burn in atmosphere and barely hit Earth surface. Oumuamua may have traveled through earth atmosphere and hit Earth undamaged. The difference is obviously like day and night. https://en.m.wikipedia.org/wiki/Impact_event https://en.m.wikipedia.org/wiki/Impact_event Contains some tables with actual numbers (based on a 17km/s impact), including how big of a airburst a non-impacting object makes and how much of a crater an impacting object makes. You aren't splitting the Earth with something the size we are talking about with any of the estimates of it's size, even at 25km/s, which basically a little over doubles impact energy, the same as a 29% increase in diameter does.