[ETL]

“traveling at 56,000 mph with a force of 5 tons of TNT.”

On Earth at least we an atmosphere to help slow these things down. And still they can obviously cause a lot of damage and destruction.

[Steely Tom]

On Earth at least we an atmosphere to help slow these things down. And still they can obviously cause a lot of damage and destruction.

At 56,000 mph, it would traverse the entire 50 mile thickness of our atmosphere in about 3.5 seconds. Of course, that's not accounting for braking.

I suppose the rate of heating it would undergo in the last two seconds or so might cause it to break up, but even a six inch chunk hitting something at 10,000 mph would leave quite an impression.

[Steely Tom]

On Earth at least we an atmosphere to help slow these things down. And still they can obviously cause a lot of damage and destruction.

Yeah, I thought the amount of energy was a little low for 56,000 mph. But I checked it and it worked; they appear to be using an estimated mass of 90 pounds for the rock.

Then I looked at the scale (lower right of picture). That crater is something like 55 feet in diameter!

Rock 1.5 feet long digs out a crater 50+ feet across. Yeah, that's a lot of energy all right.