1. commet halley has an interesting mass of 15km.
2.The distance from earth in a rotation period is 2.2-7.4 days
3. Revolution period in earth years are 76 years
4. Comet halleys is made of frozen gas,rock and dust .If any life form to live on comet halley it would be a very cold comet
5. There is no atmosphere and the distance from the sun is 4 billion km from the sun
6. interesting fact the comet has no moons , no rings on comet halley.