Continued thread
A single #HAMMER impactor (9-meter-tall, 8.8-ton) could deflect an object 
90 meters in diameter 
by around 1.4 Earth radii with 10 years of lead time – from the time of launch to anticipated Earth impact. If limited to #telescopic 
observations, it’s possible that researchers may not be 100 percent certain of an #impact until less than a year before collision 
. https://www.llnl.gov/article/44186/scientists-design-conceptual-asteroid-deflector-and-evaluate-it-against-massive-potential
www.llnl.govScientists design conceptual asteroid deflector and evaluate it against massive potential threatLawrence Livermore National Laboratory (LLNL) scientists are part of a national planetary defense team that designed a conceptual spacecraft to deflect Earth-bound asteroids and evaluated whether it would be able to nudge a massive asteroid – which has a remote chance to hitting Earth in 2135 – off course.
