The Cosmic Diary of a Future Space Explorer is Blue Peter's Book Club choice for March 2026. Learn more about space travel as it is today, and what it could look like in the future in this exciting ...
The tiny nucleus of the comet (not visible) is surrounded by a bright halo of gas known as the coma. A long tail stretches away from the comet, and we see hints of rays, jets, streams and filaments.
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