The burst occurred when a giant cloud of plasma ejected from the solar corona, and moving with a speed of about 2.5 million
kilometers per hour struck our planet, causing a severe compression of Earth's magnetosphere from 11 to 4 times the radius of Earth.
Not exact matches
Hurricanes wreak havoc when they
strike the shore, especially those with winds exceeding 200
kilometers per hour.
MRO's new images support this interpretation and strongly suggest that the sizable dark patch is a crater produced when Schiaparelli
struck the surface at greater than 300
kilometers per hour after a two - to - four -
kilometer free fall.
The tentative verdict is that this probably is the remnant of a recent asteroid collision, where a smaller body
struck a larger object at a velocity of about 15,000
kilometer per hour.
Colliding at speeds up to 22,000 miles
per hour (36,000
kilometers per hour), such a collision may have stripped most of the rocky mantle from the protoplanet that became Mercury with its iron - rich core, while a Mars - size protoplanet
struck the early Earth off - center and created a spray of mostly mantle material that later accreted to form the Moon.
Only six years later, Hurricane Hattie
struck the central coastal area of the country, with winds in excess of 300
kilometers per hour and four - meter storm tides.