What would happen if Apophis Astriod hits Earth's surface ?

Apophis was discovered by Roy A. Tucker, David J. Tholen & Fabrizio Bernardi on June 19, 2004. It is a 400 meters wide & 26.99 billion kg heavy asteroid with an average orbital speed of 30.728 km/s.

Astronomers calculated that there's a small possibility of Apophis hitting Earth in 2029 or 2036.

So, what will happen if Apophis hits the Earth?

On hitting Earth it will produce an Energy of more than 100 thousand Hiroshima bombs, which is enough to destroy an entire country. In case it lands in highly populated areas or countries like India, China, or America then it will kill millions of people within a few minutes of destruction.

Now you might be wondering how do we stop this Asteroid from hitting Earth?

Well, today we don't have any good practical solution to stop an asteroid that big. But, here are a few ideas that might be helpful in the future.

Laser Beam - By pointing a strong laser beam on the asteroid we can actually change it's path slightly. That slight deflection would be enough to keep it away from Earth.

Nuke - Idea is to send a spaceship full of nukes & slam it into the asteroid. That will break it down into pieces.

Gravity Tractor - We can send a spaceship & instead of slamming it into the asteroid, we can use its gravity to deflect the asteroid's path.

Where will it hit?

We can't tell exactly where on Earth it will hit because the path may change because of internal or external factors. Internal factors include the sudden release of water or vapor streams from within the asteroid. External factors could be it's a collision with other small asteroids while moving through space.