The Challenger space shuttle was destroyed when its external fuel tank exploded less than a minute
after launch. Both objects were torn into fragments of varying sizes, and rained into the ocean off the
Florida coast of the Kennedy Space Center. There was little in the way of ballistic trajectory involved ...
nothing left the earth's atmosphere, and nothing achieved earth orbit. Nothing reached altitudes beyond
those of ordinary commercial airliners. All debris was in the water in a few minutes.
Challenger was a US Space Shuttle- it's missions took place in low earth orbit, in which it made one rotation about every 90 minutes, 1.5 hours, depending on its altitude.
Halley's comet hasn't hit Earth yet, and there's no reason to believe it's about to. It swings by at its closest about every 76th year.
It depends on where Earth and Mars are in their orbits. Since Mars takes longer to orbit the sun than Earth does the distance between the two planets varies considerably. When Earth and Mars are closest a beam of light will take about 4 minutes to reach Mars from Earth. When they are farthest (on opposite sides of the sun) a bean of light would take about 12 minutes.
Close to 100%, if you wait long enough.
it's been long gone. solar 'tsunamis' hit about once every 11 years, but earth's magnetic field prevents it from getting through.
Too long
The rays from the sun take 8 minutes to hit the earth
3 to 4 days.
They do it all the time.
Halley's comet hasn't hit Earth yet, and there's no reason to believe it's about to. It swings by at its closest about every 76th year.
it takes about 8 minutes for the sunlight to get to the earth.
It varies, but the last shuttle mission hit orbit about 12 minutes after launch.
8 minutes
the meteor hit earth and boom
around 207 mph
From the time the light photon is generated in the core of the Sun, it may take millions of years to get to the surface. But once it reaches the surface of the Sun, the Earth is only 8 minutes 20 seconds away!
From the time mission control gives the signal for the shuttle to re-enter and return to Earth, it takes about one hour for the whole process. The shuttle flies at 17,000 mph before the wheels hit the Earth.
Approx. 8/9 mins.