It doesn't rotate around earth, but around the sun. This happens every 75-76 years on average.
in 2016 .
Halley's Comet does not rotate, but perhaps you mean revolve, as in how long it takes to revolve around the sun.If that is what you mean, then the revolutionary period of Halley's Comet is about 75-76 earth years.
The Moon is bigger. It has a diameter of 2,159 miles (3,476 kilometers), which is about four times smaller than the diameter of Earth. Halley's Comet nucleus (the solid bit) is estimated to be approximately 5 miles by 9 miles.
Earth rotates around the sun .
The sun does not rotate. The earth rotates
earth
The sun does not rotate around the earth. Ever. The Earth rotates around the sun once in one year.
The Sun does not rotate around the Earth, nor does the Earth rotate around the Sun. The Earth revolves around the Sun each year, and each body rotates about its own axis: once a day for the Earth, once in about 25 days for the Sun.
Around the earth and past the sun.
Blue around the edges of the comet and white at the base when your viewing it from Earth
All the time. (The moon is actually orbiting around the Earth, which is orbiting around the sun)
Neither the Sun nor the Moon are planets. Planets rotate around the Sun. Moons rotate around planets. There are other rules to explain the difference between planets and asteroids and comets which also rotate around the sun. Such as planets because of their strong gravitational field, clear objects in their rotation around the Sun, something a small asteroid, nor a small comet can do. However, neither the Sun (which planets rotate around), nor, the Moon (which rotates around the planet Earth), is a planet.