Comets

Ryves Comet was discovered by P.M. Ryves, an English amateur astronomer, on August 14, 1931.

That depends on the comet.

because god sent them for us to see. hail almighty god.

Comets are not a source of light themselves, but they reflect sunlight. When sunlight hits a comet's nucleus, it causes the surrounding gas and dust to glow, creating the characteristic tails we see from Earth.

Yes, It is in a 26 million year orbit at the region called the Oort Cloud. Nemisis sends comets from the Oort Cloud and sends them to the middle of the solar system or sometimes it hits the earth!!

The resulting scar from asteroid or comet strikes is called an impact crater. These craters are formed when the meteorite collides with the surface of a planet or moon, causing a depression in the ground.

Comet

Comet HALE-BOPP
Comet SWIFT-TUTTLE (1992)
Comet HYAKUTAKE
Comet HALLEY

Most comets are "famous" because they provide viewable tails, and because they reappear on a regular schedule, or after a period of years.

It would help immeasurably if the reporters in the print and broadcast media

would learn something about them, in order to know whereof they speak

when doing so. It's really too bad that knowing a little math and science

is considered so uncool.

Air Comet Chile ended in 2008.

the speed of a comet and the rotation is far too fast for a spacecraft to land

Every comet has its own orbit and its own timing in terms of how long it takes to orbit the sun.

Collisions between objects in the Kuiper Belt produce fragments that become comets. The comets are known as short-period comets. Short-period comets take less than 200 years to orbit the sun. Therefore, they return to the inner solar system quite frequently, perhaps every few decades or centuries. Short-period comets also have short life spans. Every time a comet passes the sun, it may lose a later as much as 1m thick.

Meteors are mostly made of rocks. Actually a "meteor" is the glowing streak of light that we see as a meteorOID falls through the Earth's atmosphere, so technically a "meteor" is made of incandescent plasma, not anything solid. MeteorOIDS are mostly rocky or metallic, and all meteorITES are, once they hit the Earth (if they survive that long!).

Yes. A comet is a real object that you can observe.

The only one I know is Halley's Comet. There may be others.

no

The Wikipedia article on "Tycho Brahe" summarizes it quite well. Briefly, his observations showed that the celestial sphere was NOT "immutable", as was believed before his time.

Hundreds of tiny shards of rocks, ice, and basically anything that will stick together.

You're welcome.

As of now, there are no spacecraft missions planned to travel to Halley's Comet. The last time it was visited by a spacecraft was in 1986 by the ESA's Giotto mission. The comet is currently not within reach of any existing spacecraft technology.

Each comet is given a new and different name when it's discovered ... a name that's

never been used before for any other comet. There's only one "Halley's" comet.

The last time that one was near enough to the sun to be visible from Earth was

in 1986, and it's expected to arrive in this neighborhood again around 2061 or 2062.

there's comet halley, comet hale-bop, comet borrelly, and Comet wild 2... that's all i can think now.

Comets have been in space since the start of time. In the 1800's there were many people who knew comets where a space phenomena, there were people who thought it was a message from the gods. What people thought of the comets depended on their cultural beliefs.

Comets are ephemeral, though a few recur with a regular period. Halleys Comet is the classic example of this.

Some comets have return periods considered greater than, or comparable with the age of the universe. Many are bound within the Solar System, with one of their orbital foci near the Sun, and the other in their region of origin.

A Comet consists of a body containing evaporable material - ice or gas - and depending upon how close to the Sun they pass, they will eventually lose most of their mass.

The comet's tail points away from the Sun, and is made from the volatile components evaporated by the Solar Wind or by particles from the Sun.

There are some comets near Pluto, amongst the bodies in the "Kuiper Belt".

However, I think the answer to this question is the "Oort cloud" of comets, far beyond the orbit of Pluto.