Griffith Park Observatory in Los Angeles used to have a laser show on weekends, set to Pink Floyd. One would think that with such a strong connection between the astronomy community and the pothead community, it’d wouldn’t have taken five years for someone to know the name of the song.

a) its signature musicianship and lush melodic, symphonic overlays
b) unbearable drama and emotion in the music

it’s the last movement of the Dark Side of the Moon track.

That’ s just sad. This is cultural history people.

COME TO THE DARK SIDE (of the moon)

The story of the Earth of 4.6 billion years.

Meteorite Collision simulation.

“When the meteorite collides with the earth”

“Explanation”

What happens when meteorite collide with each other? We tried to find the answers: Simulation Experiment. We presumed that the collision happened with the earth in order for lucid distance and location. The diameter of the meteorite is slightly bigger than the breadth of Honshu Japan. The collision point is located at the 3,000km south from Japan in the ocean. The velocity of the meteorite is 70,000km/h. But the meteorite is bigger than we can imagine, so that it appears much slower. In the impact at the same time as colliding. The earth’s crust of 10km in thickness where ground in the earth is composed is wholly peeled off. This is called,”Earth’s crust tidal wave”. There is 1km width of the rock, and it flies to the sky it by the impact. The impact surges to the Japanese Islands and,as a result, the Japanese Islands are crushed. The splinter of the crushed rock easily exceeds the height of 1000Km. After exceeding the atmosphere it reaches space. Afterwards, the splinter of the rock falls again in surface of the earth. The edge of Crater completed by the collision of the meteorite is 7000m in height. It looks like a huge mountain range. The diameter of Crater has 4000Km. Crater is big to swallow a part from Guam to a Chinese continent. But,it was only an introductory chapter of the tragedy that would start in the future…..

The leading part with the accident is seen in Crater when seeing from space immediately after the collision of the meteorite. Seeming as shine to scorching color, and huge mass. The mass of the rock of which this turned into the gas and the name are said, “Rock Vapor”. The amount of the rock that becomes a gas is about 100000000000000kt. “Rock Vapor” extends in all directions on the earth after it swells up like the dome. “Rock Vapor” generated by the meteorite’s having been dropped to the sea located in the south of Japan will arrive at Himalayas in three hours. In “Rock Vapor”, the velocity of the wind is 300 meters. It becomes the hot wind of a terrific high temperature of 4000℃ in temperature and burns Himalayas. In the world covered with “Rock Vapor”, even a thick snow that piles in the coldest place named Himalayas is instantaneously melted. There is no time to make the river and the snow is evaporated instantaneously. “Rock Vapor” will reach Amazon that lies to the other side of the collision of the meteorite in a day. Tropical forests of Amazon cause the autogenous ignition for the hot wind by “Rock Vapor” and the region is burnt up. Tropical forests of Amazon turn into sea of flames in less than no time. Surface of the earth from the collision on the first. It is covered with “Rock Vapor” and it turns into a scorching star. “Rock Vapor” wraps the earth for one year or more, and burns everything up at the terrific high temperature. It is the same as making the sun innumerable near the earth. On the other hand, the accident happens also in the sea. The sea began to bubble violently. The sea boils by the heat of “Rock Vapor”. Tremendous heat of the “Rock Vapor” reduces the sea level at the speed of 5cm a minute. The naked sea bed is relentlessly exposed to the intense heat and melted down like lava. The sea of 4000m in average depth has disappeared one month after the collision of the meteorite. At this point, the earth becomes a star where the living thing cannot live. Thus, the earth turned into the star of the death.

WOULD THE ASTEROID BE SPHERICAL, OR WOULD IT BE LUMPY?
An asteroid this size is too big to have an irregular shape. Its own gravity would cause it to collapse into a spherical shape. But there’s another issue: Wouldn’t the impact on the Earth’s atmosphere cause the asteroid to flatten like a pancake before it hit bedrock? I dunno.

1. THE PEACE AND CALM BEFORE OBLITERATION
I think this catastrophe would propagate at hypersonic speeds, much faster than the speed of sound in rock, air, etc. So would you be standing at a bus stop one second, and blasted during the next? I dunno.

2. WOULD ANY LIFE SURVIVE?
That depends on how long the Earth’s surface stayed above boiling temp. Maybe some bacteria would emerge from deep in the rocks under the ocean, and it would all start over again.

3. WHY IS THE ASTEROID RED HOT BEFORE IT HITS THE EARTH?
Maybe it did a close flyby of the sun before hitting Earth, during which it was heated by the sun and by tidal forces.

4. WHICH MOVIE WAS BETTER, ARMAGEDDON OR DEEP IMPACT?
Deep Impact, by far. The morons who made Armageddon still think that spacecraft zoom around like airplanes, with rockets flaming out the rear.

5. WOULD IT BE A MISTAKE TO SHATTER AN ASTEROID BEFORE IT HITS EARTH?
Most experts say it would be a mistake, but they’re wrong. An asteroid that arrived in pieces would deliver the same total amount of kinetic energy, but spread out over a wider area. Each piece would penetrate less deeply into the Earth’s crust. Given a choice of being shot with a load of birdshot and a .25 bullet, I’ll take the birdshot any day.

6. WOULD GOD ALLOW SOMETHING LIKE THIS TO HAPPEN?
He already has. But not to us. Yet. He expects us to do something about it ourselves. See next paragraph.

7. IS THERE ANYTHING WE CAN DO TO PREVENT THIS?
Sure there is. Support the space program with your tax dollars. NASA has already begun a program to locate potential infalling asteroids, and has done a good job of checking out thousands of them. Its next step is to find as many of the smaller ones as possible. Next we need a true space-faring capability, which we don’t have yet. That’s the bad news, but the good news is that advances in robotics are making space-capability cheaper and cheaper all the time.

8. IS THIS THE SCARIEST VIDEO I’VE EVER SEEN?
It sure is.

How many meteor showers do we have each year?

Check out

http://www.lpl.arizona.edu/impacteffects/

Despite all-its an amusing animation.
I wouldnt call it terrifying though.

Some confusion may come from images people have seen of solar eclipse shadows where often the expanding penumbra shadow of the Moon on the Earth is left off the diagram and only the ‘pointy’ umbra central shadow (of eclipse totality) is shown. The ‘pointy’ central shadow is due to the fact that the Sun is not a ‘point source’ of light, and is, in fact, much larger than the moon. So the darkest part of the shadow is where the Sun is comlpetely blocked. The lighter shadow around the central shadow is where the Sun is partially blocked. Also, the object has got to be far enough away from the Earth to see this. As the object approaches, the umbra and penumbra nearly merge and the penumbra ends up as just a fuzzy edge to the shadow.

In this video, this dual-tone (fuzzy edge) can be seen as the shadow passes over the buildings in the city.