Guess who takes planetary defense against asteroid seriously?

Delta4Embassy

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Dec 12, 2013
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Yup, the Russians.

Russia to spend billions on asteroid defense

" Moscow believes an operable national defense against threats from outer space can be built within 10 years’ time. The 500-kiloton explosion of a space bolide above the Urals region has sped-up allocation of some $2 billion to prevent future threats.

Russian scientists have presented a federal program designed to counteract space threats. Elaborated by the Institute of Astronomy at Russia’s Academy of Sciences and the Central Engineering Research Institute, Russia’s leading space industry enterprise, the program has already been approved by Roskosmos, the national space agency.

The program has nothing to do with Hollywood sci-fi movie scenarios; no lasers, annihilators or Bruce Willis drilling a huge peace of rock rushing towards Earth.

The system will consist of a network of robotic telescopes monitoring space around our planet, some of them delivered to orbit, others operating from the surface.

Destruction of an asteroid in emergency cases may be performed by a rocket with a powerful megaton-class thermonuclear warhead. If the threat is detected early, more advanced means of changing an asteroid’s orbit may be considered.

The program costing 58 billion rubles (over $1.9 billion) has already been handed over to the head of Russia’s defense industry, Deputy PM Dmitry Rogozin who is expected to present it to Prime Minister Dmitry Medvedev."


Nuclear option isn't a good option. Best case you pulverize the impacter, but now it's irradiated and still coming down onto you. Only now as fallout and millions of pieces scattered over a massive area.

Railgun network is the better solution. A physical hypervelocity projectile will shatter an incoming bolide without irradiating it. Build and place them to cover an area, coupled with radar and telescopic detection nets, when detected computers auto-target and engage faster than humans could and smaller objects like the Cheryabinsk one can be dealt with.
 
A fairly large object travelling at 50,000 mph or more won't be deflected or 'pulverized' by an impact. The best option is to spot them early enough and park a satellite next to it to tractor the thing into a trajectory that isn't in line with Earth. If you do this far enough out the amount it would have to be 'moved' off its course is miniscule.

If a large enough asteroid is not detected until its fairly close in there is nothing we can do.
 
I think we need a satellite-based or maybe even a moon-based asteroid detection system. We need to be able to detect much earlier and there's too much clutter to see through from the Earth.
 
One thing I have observed regarding asteroids is there has never been an impact large enough to sterilize the Earth of life. Not very comforting for our species as there have been strikes that have denuded the Earth of 75% or more of all species, and the larger the animal the worst off it was. But in 3.5 billion years there hasn't been a sterilization impact.

Lucky us!
 
So seriously guys that seems like an ideal platform for detecting incoming asteroids. We land two telescopes on the dark side of the moon, one north of the moon's equator on south. Then all those telescopes do 24/7 is beam back pictures. We would get much earlier detection and be able to influence trajectory of incoming asteroids with much less energy required.
 
They estimate the Tunguska impact at 10 Mt. Cheryabinsk at 500 kilotons. And there's some good speculation a comet hit 13,000 years ago causing the Clovis extinction. That one was in the millions of Mt.

Checking space weather this morning, there's a bolide about the size of the Cheryabinsk impacter passing 0.8 LD day after tomorrow. Far in human terms, 1 LD being over 384k KM, dangerously close in astronomical terms.

We need a planetary effort to protect ourselves from these things or we aren't going to be here very long. If the world's powers can't agree on anything else, working together to protect ourselves from mass extinctions surely can be the one thing we all agree on. Going extinct is bad. So let's work together guys.
 
One thing I have observed regarding asteroids is there has never been an impact large enough to sterilize the Earth of life. Not very comforting for our species as there have been strikes that have denuded the Earth of 75% or more of all species, and the larger the animal the worst off it was. But in 3.5 billion years there hasn't been a sterilization impact.

Lucky us!

Clovis extinction just 13,000 years ago. Hit in Eastern Canada. Whether planetary sterilization, or everyone dies is kinda moot if you're one of the species that'd go extinct.
 

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