3 ms·
Tunguska was a lot bigger than a metre across. Even the Chelyabinsk meteorite was a lot bigger, 18 m diameter, 9 000 tonne. So if we cn detect 1 m meteors I t
by kwhitefoot 4y ago
Tunguska was a lot bigger than a metre across. Even the Chelyabinsk meteorite was a lot bigger, 18 m diameter, 9 000 tonne. So if we cn detect 1 m meteors I think we should be able to detect Tunguska scale objects.
- btilly 4y agoWe may notice some small things, but that doesn't mean that we've found all large things. According to https://www.nasa.gov/planetarydefense/faq https://www.nasa.gov/planetarydefense/faq we only know about 40% of the rocks sized 140 meters+ that cross Earth's orbit. If one of the 60% we don't know about came at us from the direction of the Sun, our odds of seeing it before impact are fairly small.