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Originally posted by backinblack
reply to post by DJW001
Nice thread and added info.
But when did NASA actually notice this rock?
We seem to be getting a few late surprises lately..
I wouldn't be so quick to quote specifics from the Tunguska event. Nobody is even sure what happened there hence why they call it the Tunguska event.
That could be bad; if it does in-fact collide with Earth since Tunguska(Asteroid) Caused a 5-30 megaton explosion and was 60 metres across.
30 metres may cause a significant Air burst..
The explosion is believed to have been caused by the air burst of a large meteoroid or comet fragment at an altitude of 5–10 kilometres (3–6 mi) above the Earth's surface. Different studies have yielded varying estimates of the object's size, with general agreement that it was a few tens of metres across.
Remember objects fall from the sky onto Earth all the time and most of them hit the ground with little to no damage.
Originally posted by juleol
This is the exact problem... We dont have the funding or ability right now to find and track all asteroids.
For 15 years, scientists have benefited from data gleaned by U.S. classified satellites of natural fireball events in Earth's atmosphere – but no longer. A recent U.S. military policy decision now explicitly states that observations by hush-hush government spacecraft of incoming bolides and fireballs are classified secret and are not to be released, SPACE.com has learned.
Originally posted by Ironclad
20meters... Thats 60 feet in Diamiter.... Something that size won't totally burn up in the atmosphere. It would make an awsome mini-nuke when it hit and a nice hole in the ground..lol
Now why would they want to make incoming space rocks CLASSIFIED?