In June 1908 in a deserted area of Siberia what happened was considered as sacrifice of Aliens for people of planet earth.

In Tunguska, Siberia there occurred an event where thousands of trees, animals etc was destroyed within few moments following some tremors and there was a glowing sky after the 10 days of the event.

According to most of the scientists a large meteorite had exploded above the surface of the earth to a distant place. What were found in the area of tremors were quartz pieces and crystals with bizarre marking on them.

While most of the scientists believed in meteorite and natural cause, Dr. Yuri Labin came with a different theory.

According to him, a large meteorite was about to fall on the earth, but before that can happen Aliens spacecraft hit itself with the meteorite to save the earth. So, basically UFO hit the meteorite and sacrificed to save the people on earth.

The mater of Aliens and tremors still remains unresolved with solid explanation and theories.