Is there a connection between Space, meteoroids, Disease , viruses and cure ?

Space science – study of everything in outer space. This has sometimes been called astronomy, but recently astronomy has come to be regarded as a division of broader space science, which has grown to include other related fields, such as studying issues related to space travel and space exploration (including space medicine), space archaeology and science performed in outer space.
{ref: wikipedia}

One theory indicates that virus comes to earth from space . may it be possible or not. But viruses should have a birth place. Every time we hear a new disease , A new virus comes in knowledge. That may be possible viruses comes to the earth through space ship { that we sent in the space } or meteoroids that strike to the earth. 

If it is possible , the cure of disease may also be present in space.....
Cancer treatment , Aids treatment and other incurable diseases cure may be present in Space.

If viruses come to earth through spaceship, then we have to think some preventive majors to avoid viruses from space.

when meteoroids enter into earth environment a huge amount of heat produce, there should be destruction of viruses that is stick to the outer cover of meteoroids.
Possibility is that the virus in inner side of meteoroids may reach at earth.

We need evidence to justify our theory, but we can't neglect this possibility....

Some day from a meteoroid we will find cure of a incurable disease.....