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Asteroid Day 2020

lpetrich

lpetrich

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Today is Asteroid Day:
Asteroid Day is a dynamic awareness and educational program to inspire the world about asteroids – their role in the formation of our solar system, how we can use their resources, how asteroids can pave the way for future exploration and finally how we can protect our planet from asteroid impacts. Asteroid Day events are held on 30 June each year to mark the anniversary of the 1908 Tunguska impact. Asteroid Day events are largely independently organized around the world for people of all ages and are mostly free-of-charge. Asteroid Day is a program run by the Asteroid Foundation, a Luxembourg nonprofit organization.
Click to expand...
This day is the 112th anniversary of the  Tunguska event, a huge explosion over the middle of Siberia that is still not very well-understood. I've seen hypotheses about it ranging from an asteroid or a comet to a gas eruption, a mini black hole, a chunk of antimatter, and even the crash of an extraterrestrial spaceship.

A few years back, I wrote a story that was inspired by that latter hypothesis:
 
lpetrich said:
Today is Asteroid Day:
Asteroid Day is a dynamic awareness and educational program to inspire the world about asteroids – their role in the formation of our solar system, how we can use their resources, how asteroids can pave the way for future exploration and finally how we can protect our planet from asteroid impacts. Asteroid Day events are held on 30 June each year to mark the anniversary of the 1908 Tunguska impact. Asteroid Day events are largely independently organized around the world for people of all ages and are mostly free-of-charge. Asteroid Day is a program run by the Asteroid Foundation, a Luxembourg nonprofit organization.
Click to expand...
This day is the 112th anniversary of the  Tunguska event, a huge explosion over the middle of Siberia that is still not very well-understood. I've seen hypotheses about it ranging from an asteroid or a comet to a gas eruption, a mini black hole, a chunk of antimatter, and even the crash of an extraterrestrial spaceship.

A few years back, I wrote a story that was inspired by that latter hypothesis:
Click to expand...

Given that it's 2020, I assume a giant asteroid is going to hit us today.
 
Videos of fireballs:

4K 2015 Perseid Meteor Shower, Yosemite National Park. UHD - YouTube

The Tunguska explosion had something around 100 times the explosive force of the Chelyabinsk-meteor explosion -- and happened closer to the ground, some 5 - 10 km altitude.
 
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