Chunk of frozen gasses, ice, and rocky debris that orbits the Sun. As the nucleus begins to disintegrate, it also produces a dust tail in its orbital path and a gas or ion tail pointing away from the Sun.
A Universe of Inspiration
Our shows feature narration by numerous astronomy experts, delighted to offer their knowledge along to way
Watch a selection os our previous astronomical webcasts from your home or classroom
Book Telescope time for your students, take images, create survys and conduct real astronomy research