Conspiracy to destroy planet earth: 5 ways

1) Crush it with black holes. A black hole is what's left after a star has collapsed on itself. It's the most destructive force in the universe. The closer you get to it the more powerful it becomes. Not even light can escape a blackhole. What goes into a blackhole never comes out, not even stars or planets can escape a blackhole. They start out small and the more matter they absorb the stronger they become. Black holes come in all shapes and sizes. A marble size blackhole can actually swallow the whole planet earth, and destroy it.

2) Alter the earth's orbit and bring it closer to the sun. Eventually the sun would scorch the earth. Physicists claim that this phenomenon will actually happen in about 2 billion years' time. We can do this by taking an asteroid and using it to steal energy from the earth, and dumping it on to Jupiter over and over again. Each time the asteroid steals energy, the earth moves closer to the sun. Do this often enough and the earth will be vaporised by the sun. The sun would then resemble Saturn with its own rings.

3) Use an anti-matter bomb. Discovered in the 1920s and detected in the 1930s, anti-matter is the most explosive substance ever found. Far more powerful than a hydrogen bomb. For every particle ever created there's an anti-particle. When you bring a particle and an anti-particle together they explode and release large quantities of radiation. Anti-matter disappeared during the big-bang. The universe we see today is what's left over after the explosion and disappearance of anti-matter. Anti-matter can be created by colliding particles together at high-speed. To destroy planet earth we'd need 2 trillion tons of antimatter which would combine with the matter on earth and thus explode and vaporise earth.

4) An asteroid big enough to destroy the planet entirely. An asteroid is what destroyed the dinosaurs thousands of years ago. It also destroyed most if life on earth. We're already developing technology to prevent asteroids from hitting earth. When an asteroid hits a planet it creates a crater and detroys whatever falls into its path. To destroy earth the asteroid would have be as big as Mars. There are certain parameters required of the asteroid in order for it to destroy the earth. The asteroid has to have a certain speed, size and it has to hit the earth at a certain angle. With all of these variables obeyed, earth would be reduced to pieces, and all life on the planet would cease to exist.

5) Robots taking over the earth and detroying it. Machines that can copy themselves and think for themselves can take over the planet and destroy it, especially if they feed off rock on the planet. Robots that learn, and robots that can build are already available at Yale University. Self replicating and intelligent nanorobots can destroy the planet. Design a nanorobot that uses rock as food to replicate and you've created a monster that can destroy earth. However they would have to be smart and work cooperatively together, and work like ants. If the robots take a day to reproduce then in a single month, there would be a billion robots. Robots which devour rock, and given enough time they would eat the earth and destroy it completely (via ngc).