Comets

Our current theory of the formation of our solar system is that the planets formed more or less in their present orbits. We do not believe that the planets (with the exception of Pluto) were "captured" by the Sun's gravity.

Although all Comet Group stores were shut down on 18 December 2012, they sold various electronics. Examples of their merchandise include digital cameras and televisions.

That is Halley's comet, named after English astronomer Edmond Halley,

no non of the people in Mesopotamia saw the comet

Comets

comets are known to be dirty snowballs.

The "coma".

25 seconds I thought it would be longer. The free-fall speed of the human body is 120mph. So, the aircraft has to dive and reach a vertical speed of 120mph. If you run the calculations with the a/c starting at 45,000 feet altitude, you would expect the aircraft could "fall" for 4 minutes. But, of course, you have to allow time for the aircraft to pull out of the dive and a little margin for safety. Then there are structural limitations on the aircraft. What is amazing is that the weight-less scenes in the movie "Apollo 13" were filmed using a "vomit comet". This required them to fly over 58,000 dives. The weightlessness is not caused by diving, but by flying upward into a curve (I believe it is called a hyperbolic curve). This curve essentially imitates what a body would do projected upward into a similar curve. I'm sure it's a great deal safer and less stressful (on body and plane) than any "dive" method.

Zero G conditions are achieved just before, during, and after the top of the above mentioned curve. For a informative diagram of this phenomena see the Web Link to the left.

In Japan, the superstitions that are related to comet and asteroid is that it is death calling. People therefore are usually afraid to see the comets and asteroids.

nucleus lol

The fastest nerve conducts an impulse at 120 metres per second. However transmission speed is related to diameter, and so nerves with a smaller diameter conduct impulses at a much slower speed. In general, the conduction velocity is approximately equal to 6 x axon diameter in micrometres. The constant value of 6 is referred to as the Hursh factor.

Meteor "showers" happen when the Earth passes through the path of an old or extinct comet. As the comet approaches the Sun each pass, the frozen gasses of the nucleus vaporize, and the gas then carries away some dust and sand into space. But it's not pushed very far; the dust and gas are still orbiting the Sun ALMOST in the same orbit as the comet does.

So after a thousand or more orbits, there gets to be a dusty path all the way around the Sun. When the Earth passes through (or near) the dusty path, we get grains of dust and sand striking the Earth, falling into the atmosphere, and burning up - a "shower" of meteors. The path doesn't change; it only intersects the Earth's orbit at one point, and the Earth hits that point just about the same date each year.

And so we get regular "periodic" meteor "showers".

Yes. Old and extinct comets are probably the source of most of the "meteor showers" that we see over the year. It's not that the dust forms something else; the dust ARE the meteoroids.

major massive destructions

Bailey's Comets - 1973 Skateroo to the Carlsbad Clue To Win or Toulouse 1-1 was released on:

USA: 9 September 1973

If something is considered a "superstition", that means it is UNSCIENTIFIC. Once there is evidence that something is true, it will no longer be generally considered a superstition.

No. Halley's Comet barely gets past the orbit of Neptune, and not by much. It is well short of reaching into the Kuiper Belt.

Laval Comets was created in 2006.

The outer Oort cloud. (The inner Oort cloud is believed to be disk-shaped.)

No. The Oort Cloud is "leftover" mass from the formation of the Sun and the planets.

Halley's Comet is a short-period comet; we can predict that it will return to the inner solar system within our lifetimes, and several times in recent history. Most other comets are either long-period and will not return for centuries, or will never again be visible.

Sometimes it is very bright; sometimes it is a "fizzle". It is this element of reassuringly-predictable repeating mystery that makes it noteworthy.

Comets are mostly made up of ice. They usually have a metallic core high in nickel. The tail of a comet is actually the ice melting as it passes a heat source.

reappearance

Halley's Comet or Comet Halley (officially designated 1P/Halley) is the most famous of theperiodic comets and can currently be seen every 75--76 years. Halley's Comet last appeared in the inner Solar System in 1986, and will next appear in mid-2061.

A comet