Halley's comet coma is 100,000 miles vs 15 miles.
It is called a Coma.
Because they do not have volatiles in them to form a coma as to comets.
big
Nucleus coma tail
1-nucleus 2-coma 3-tail
Comets are made of mainly 3 parts -dust tail, ion tail and coma
When you hit it very hard over the head.
comets have a halo/coma/tail surrounding and behind it caused by evaporation of ice. Metorides dont have this. Comets have high eccentrical orbits, meteroides not as much.
Yes, there are many comets other than Halley's comet. Comets are icy bodies that orbit the Sun and often have elongated orbits that bring them close to the Sun. Some well-known comets include Hale-Bopp, Comet NEOWISE, and Comet Lovejoy.
Beacuse asteroids are chunks of solid rock - Comets are primarily lumps of ice - which melts as it nears the sun !
coma
A cloud of gas surrounding the nucleus.