https://en.wikipedia.org/wiki/Near-Earth_object https://cneos.jpl.nasa.gov/sentry/ https://cneos.jpl.nasa.gov/ca/ https://ssd.jpl.nasa.gov/
https://en.wikipedia.org/wiki/Atmosphere_of_Earth https://en.wikipedia.org/wiki/Magnetosphere https://en.wikipedia.org/wiki/Aurora_borealis https://en.wikipedia.org/wiki/Aurora_australis https://en.wikipedia.org/wiki/Exosphere
https://cneos.jpl.nasa.gov/links/ https://www.iau.org/public/themes/neo/ https://www.amsmeteors.org/ https://en.wikipedia.org/wiki/List_of_asteroid_close_approaches_to_Earth https://en.wikipedia.org/wiki/Asteroid_impact_prediction https://minorplanetcenter.net/ http://www.brera.mi.astro.it/sormano/teca.html http://www.brera.mi.astro.it/sormano/sael.html https://newton.spacedys.com/neodys/index.php?pc=4.1 http://www.hohmanntransfer.com/
https://sputniknews.com/science/202006151079615844-martians-have-hit-glowing...
Unlikely 2020nn4. Unlikely 2017mf7 2020-Jun-14 13:10 .91 LD ... Video / print news reports say event was ~20200614, find and convert from local time to UTC to check. Pond skippers... fun to watch, but need much more atmospheric impulse to blast wave anything on land.
we can say with certainty that some combination of the following must be true: - that NASA's mathematical calculations have a serious problem
1) Not enough observations to fit an accurate path. 2) Earth launched gear (satellite, lunar, planetary, etc probes) have all probably used fine tuning aero / burns to correct for inaccurate timing / aiming / model in similar calculations.
- that the object...
... was completely unknown until too late to do anything about it. As usual. Only 4 ground impactors were ever observed beforehand, all impacted within 24h of their discovery. Satellites etc can observe hundreds of small atmospheric impacts per day. Also consider odds of Humans having permanent Space or Planet base before being able to do anything about an extinctor.