Aliens.

The open clean starry night sky is blissful indeed and witnessing a sudden shooting star reminds you of making a wish. It is said your wish is fulfilled. Taurid Meteor shower: These shooting stars are the remnats of meteors in space when they enter our earth’s atmosphere with high speed. They burn up leaving glowing trail. In some countries meteor showers are witnessed every year in the month of late Oct and early November. In this period The earth enters the debris of the comet Encke. Comet Encke or Encke's Comet is a periodic comet that completes an orbit of the Sun once every three years — the shortest period of any known comet. It was first recorded by Pierre Méchain in 1786, but it was not recognized as a periodic comet until 1819 when its orbit was computed by Johann Franz Encke; like Halley's Comet, it is unusual in being named after the calculator of its orbit rather than its discoverer.

Meteors and comets

Tunguska Event: In the remote area in Central Siberia (Russia) is Tunguska river. In the year 1908 (June 30) a huge mysterious explosion occured. This bizarre incident was witnessed and narrated by the villagers. They panicked on seeing a huge bright fireball arc its way through the sky. It exploded with thundering noise which shook the earth and massive windstorm raged devastating the 830. square miles of siberian forest and nearby villages. For several nights after the explosion the people saw the night sky was glowing brightly. No one knew the reason behind this brightness. Several decades later, Reachers gathered to investigate the Tunguska Event. The latest research says that the Tunguska Event was caused by a Comet entering the Earth's atmosphere. a researcher Micheal Kelly from Cornell University studied the exhaust plumes created by Space shuttles and Noctilucent clouds. Professor of Engineering Kelly remarked that,"Its almost like putting together a 100 year old murder mystery.”The Noctilucent clouds

The Tunguska Event

"These night visible clouds are made of ice particles, they form at very high altitude of extreme cold temperature. These clouds had appeared a day after the Tunguska explosion. Kelly explained that the icy nucleus of the comets spread water forming icy clouds. They resemble the Shuttle exhaust plumes icy clouds. He remarked, "The evidence is pretty strong that the Earth was hit by a Comet in 1908 in Siberia." The Noctilucent clouds were observed after the firing of Space shuttle Endeavour (STS-118) launched on Aug 8/2003. There are plenty of theories connected with the Tunguska Event. Some people are of the opinion that "Aliens Spacecraft" must have crashed. Others believe that the explosion was caused by Antimatter reacting with earths atmosphere. In 1973 two physicists from Texas University claim that Blackhole passing through Earth must have caused Tunguska event. Whatever may be the cause of explosion by Aliens or Comets or meteorites measures are being taken by the Scientist to protect our Planet from such Events. With the new research going on we may be able to unravel the truth.