From Newsgroup: alt.fan.heinlein
"a425couple" wrote in message news:UBnuP.963956$
7_Q4.411821@fx14.iad...
(In my opinion, "worry ?" No, but keep aware and as always
our space assests should be building up plans and materials.
Also, IMHO, go to the citation to see the graphics.
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https://www.sciencedirect.com/science/article/pii/S0094576517314996
"On impact with the water, the asteroid (or what remains of it) is
essentially instantaneously vaporized."
"The simulations show that most of the impacting asteroid's kinetic energy
is consumed by the vaporization of water from the transient crater. Much of this water vapor is buoyantly lofted into the stratosphere, where it may linger for months to years. Together with chlorine from sea salt, OH
radicals from water ionization catalytically destroy ozone. Water is also a strong absorber of infrared radiation, and the effects of a large injection high into the atmosphere are not yet well understood".
Without bright sunlight reaching the ground all the solar panels and
windmills we will depend on by then will become useless.
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