Edward Hopper Hotel Lobby

Edward Hopper Hotel LobbyEdward Hopper Early Sunday MorningEdward Hopper The Camel's Hump
would take an asteroid the size of a small planet to really snuff out life on Earth.
Something very much like that seems to have happened when an object the size of Mars hit the Earth about 4.5 billion years ago, and the But recent studies indicate that Mars' entire northern hemisphere may be a gigantic impact crater, the result of a collision 3.9 billion years ago so huge it may have destroyed the planet's magnetic field.
Were that to happen on Earth, the few surface organisms that survived the impact and resulting earthquakes and fires would be fried by solar rays.resulting debris formed the moon. Fortunately, there was no life on Earth yet.life on Mars, if it ever existed, might not have been so lucky. Most evidence indicates that the Red Planet was warm and wet in the distant past, and there are signs it had a strong magnetic field to shield the surface from solar radiation.