Blue around the edges of the comet and white at the base when your viewing it from Earth
yes.
it is the time when the tail is facing the north of the other comets like this <halleys tail is north of the other comets when they go > this way
Because comets cannot decide when they will be visible. It was a natural phenomena and remains so. Comets have a 'year' as do all solar objects. Halleys comets year happened to coincide with the battle. It was a coincidence, nothing more than that.
1 - Halley's 2 - Lovejoy 3 - Hale-Bopp 4 - Ison 5 - Shoemaker-Levy 9 Note: Obviously that's a matter of opinion to some extent. I would have a different list. See "related link" below for a list of some famous comets. Note: Unfortunately, the photo and caption for the "eclipse comet of 1948" is wrong in this link.
Halleys Comet is by far the best known. The second is harder to determine - Hale-Bopp and Comet McNaught are known at the moment amongst the general public.
it will glow white, or more than likely, blue
All comets, we believe, are composed of a lot of ices such as frozen carbon dioxide, nitrogen, oxygen, water, and other gasses, with a lot of dust and some rocks. Science fiction writers Jerry Pournelle and Larry Niven described a comet as a "dirty snowball".
Neon has a bright, white glow when it has been lit. Plutonium also has a bright glow, due to its reaction with oxygen.
because Comets reflect light from the sun. This is the same way you see the moon glowing. When a comet's orbit nears the Sun it starts to warm up since they are usually black in colour.
Comets are typically white, but some have a distinct tint; green, red, or blue, depending on what elements are in the tail of the comet.
it is a party where it is glow in the dark so you should wear some thing white if you don't have anything glow in the dark.
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