may be slowing down. hello, and welcome to bbc news. the giant chinese balloon that had been floating over the united states has been shot down by an american fighterjet off the coast of south carolina. the balloon, which the us says was being used to spy on military sites, appeared to plummet straight into the sea. china continues to insist it was a stray civilian weather observation airship. david willis is our correspondent in washington. officials here are saying that this chinese balloon was brought down about six miles off the coast of south carolina by a single missile fired by a us fighterjet. now, president biden had apparently given permission for such a strike on wednesday, that is a day before the actual presence of this balloon was made public. military officials decided to hold back for fear that it could spray debris down onto the mainland and hurt people on the mainland and hurt people on the ground below. then, today, as it was crossing the coast of south car
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The evolution of our Earth is the story of its cooling: 4.5 billion years ago, extreme temperatures prevailed on the surface of the young Earth, and it was covered by a deep ocean of magma