In the last 1700s William Herscehel was searching for the Planet Uranus.
He found a group of objects that looked like a Planet, but did not move like a Planet.
He christened them Planetary Nebulae.
Since then astronomers using better Telescopes have found that they are in fact Sun-like stars nearing the end of their lives.
Dr Albert Zylstra is a UK expert in this field and we are very lucky for him to be able to come and give an insight into his research.
