by its light
Because people think that comets are cool and they have bright lights and fire and you can make a wish too also because they are interesting to watch maybe some people are scared but they are still interesting!
Many astronomers have discovered that many comets. For example, David Levy is the discoverer or co-discoverer of 22 comets.
comets could be very bright
Astronomers analyze the light reflected from comets with a machine, and can easily tell what major elements it is composed of.
Comets are classified by the size of their orbits. As soon as a comet is discovered, astronomers make measurements of its position to try to settle what orbit the comet is in. Many comets with an orbital period up to 100 years are in elongated elliptical orbits that extend out to Neptune's orbit and beyond. The faster comets with longer period might come from the Oort cloud at distances up to 1 light year or even further. A small class of comets come from outside the solar system and these are noted by their high speed and hyperbolic orbits which show they will make one visit and disappear off again.
They are from extreme outer parts of the solar system (known as "Kuiper belt") and from a huge cloud of comets lying far beyond the orbit of Pluto, completely surrounding the Sun (known as "Oort cloud").
The same reason why people name anything - to distinguish between them. Comets are named with the year of discovery, a serial number, and the discoverer's name. Most "comet hunters" are amateur astronomers who live for the fleeting fame of having discovered a comet; being an "amateur comet hunter" isn't a job that pays anything. The fame of having a comet named for them is their only reward.
Comets, meteoric swarms (Perseids, Leonids), supernovae (see SN 1572)
because it was like unique because it has like craters and because none other like comet like has one
Some of the trans-Neptunian objects would fit that description, perhaps Pluto, or it's moon Charon. One's first inclination is to say "comets", but astronomers have come to find that comets are rarely "spheres", they tend to be potato, bean or "peanut" shaped.
You can learn all about telescopes, stargazing, comets, constellations, galaxies and black holes. Find out who invented the telescope, famous astronomers and space exploration.
This ancient goddess has inspired Renaissance art, today's women rights, and animal rights movements - her name is remembered by astronomers as it's used for naming space vessels and comets.