An asteroid hit the earth 65 million years ago and wiped all the dinosaurs out. What happen if huge asteroid hit the earth today? Earth would be entirely melted.
Any asteroid falling from the sky would have a tremendous amount of energy. Due to release of huge impact energy, dispersing into heat as temperature would rise,nothing on earth would survive.
Not only that, asteroid impact also will causes a earthquake, tsunami and trigger the volcano. tsunami. Eventually, the earth will vanish.