What actually happened in Tunguska(Russia) in 1908 whether its a meteorite or alien spaceship crashed?

Answer 1

The current hypothesis is that the Tunguska explosion was caused by the airburst of an asteroid or comet 5 to 10 kilometers above the Earth's surface. The energy of the blast was later estimated to be between 10 and 20 megatons of TNT, which is equivalent to the most powerful nuclear bomb ever detonated by the US.

Answer 2

Most likely a comet fragment. I doubt it was a meteorite or asteroid as they would have left craters of some kind. The Tunguska Event did not. It flattened forests over a large area in a radial pattern indicating the central point of detonation. The fact that there is no crater indicates that whatever detonated was completely consumed and left no debris. This really does make a cometary body the most likely suspect, and the relatively small size of the detonation (I think someone said 20MT) which is very small by astronomical standards (Shoemaker Levy explosions were, in some cases, larger than the earth itself) suggest that it was a fairly small object such as a piece of a comet that had broken off at some point and drifted into our path.

Answer 3

Many people have responded that it was an asteroid. The problem is that there is no impact crater. Even with an air burst several smaller impact craters would be expected to be created as asteroid fragments hit the ground. It is more likely that the event was the result of a comet impact and not that of an asteroid. The comet, being mostly made up of gaseous ices and fine solids, would better account for both the extensive damage and the lack of an impact crater.

Answer 4

Best money is on a comet nucleus. The lack of an impact crater and chemical elements associated with asteroid or meteor pretty much rule these out as a cause.

Answer 5

There are pronounced situations from 0.33 worldwide countries. coming up countries have extra ideal traditions of spirit worship (this is a gross generalization, I comprehend) yet there are quite a few situations the place a narrative advised as spirit visitation, is reinterpreted as an alien touchdown via the west. There are people who see alien landings in the bible, and those human beings weren't a more advantageous united states of america via any ability.

Answer 6

Because of the lack of a deep crater,it is believed to have been a comet.
Because of the way the trees were felled it appears to have been a very fast moving low mass object.
We may never know!!

Answer 7

An Asteroid

On March 8 an asteroid between 40 and 80 meters in diameter passed with 480,200 kilometres of Earth. No one saw it until four days later.

In 1908, something about the same size blasted into the atmosphere above the Tungaska forest in Siberia in 1908 and exploded with force of 15 million tons of TNT, incinerating or knocking flat thousands of square kilometers of forest. Had it hit a heavily populated area, it could have killed hundreds of thousands. The next such object might.

Asteroids are rocky and/or metallic objects that orbit the Sun. They can be as small as a pebble or as large as Ceres, which has a diameter of 1000 kilometres. The recently completed Infrared Space Observatory Deep Asteroid Search suggests between 1.1 million and 1.9 million asteroids one kilometer or more in diameter can be found in the asteroid belt between the orbits of Mars and Jupiter; others wander the solar system, including several hundred whose orbits cross Earth's. There must be millions--even billions--of smaller asteroids.

It's generally thought asteroids are material that, during the formation of the Solar System, never coalesced into a planet. The examination of meteorites (small asteroids that have survived the plunge through Earth's atmosphere) reveals that 92.8 percent are composed of stone, 5.7 percent are composed of iron and nickel, and the rest are a mixture of the stone, iron and nickel. Presumably, this holds true for asteroids in general.

What would happen if a large asteroid hit the Earth? Well...it wouldn't be pleasant.

An asteroid 1.5 kilometers in diameter would cause damage unprecedented in human history, affecting the climate by injecting water vapor and dust into the atmosphere, and possibly severely damaging the ozone layer (because the impact would send up a plume of nitrogen oxide).

A much larger asteroid, say 6.5 kilometres in diameter, could darken the sky so much photosynthesis would become impossible and plants would die. Fragments of the asteroid and the Earth hurled into space by the impact would rain down all over the planet, setting forest fires. The resulting smoke would further darken the atmosphere, plunging the world into permanent night. The temperature would plummet.

Just ask the dinosaurs. There's a vast, buried crater in the Yucatan peninsula, believed to be the mark left by the impact of a 10-kilometre-wide asteroid 65 million years ago that many scientists believe played an important role in the dinosaurs' extinction.

But you don't have to go to the Gulf of Mexico to see evidence of asteroid bombardment. Deep Bay, a circular bay 13 kilometres wide off Saskatchewan's own Reindeer Lake, is thought to be the crater left behind by an asteroid impact around 100 million years ago.

NASA estimates that the risk of a collision with a large asteroid is about 1 in 5,000 over the next century. (Just a note for 6/49 lottery players: that means an asteroid is 2,800 times more likely to hit in the next century than you are to win the lottery this week. Just thought you'd like to know.)

One possible threat is an asteroid called 1950 DA, first discovered in 1950 and just recently spotted again by astronomers. Comparing data from the 1950 and more recent observations have allowed them to predict that there is a chance (less than one in 300) that the kilometer-wide asteroid will collide with Earth on March 16, 2880.

With that kind of warning, we have time to think of possible solutions. Maybe we could deflect it with nuclear weapons. Or maybe there's an even better way. One influence on an asteroid's path is the Yarkovsky effect, a slight pressure caused by the reflection of sunlight. Maybe we could darken the asteroid or coat it with a shiny substance to influence this effect. Calculations indicate that changing the amount of light 1950 DA reflects could move it as much as 1,400 kilometres in 100 years.

But to have any chance to do anything, we have to know that an asteroid is approaching. Because the threat is real, as March's near-miss shows, governments have been asked to fund scientific surveys of asteroids that cross Earth's orbit. It's estimated that advances in astronomical imaging systems could allow us to catalog all asteroids larger than one kilometre in diameter within 10 years for just $50 million.

Astronomers would like to see it happen. And in view of the long-long-range forecast for March 16, 2880 (possibility of kilometer-sized hail), so would I.

Answer 8

meteorite look at the crater it's miles long and deep,where did you get the idea that it was an alien spacecraft?

Answer 9

There is a good documentary on this, something like cone heads or ... no I just can't remember

Answer 10

it was an alien.it is now staying in my house.