Complex sentence: The Jovian-Plutonian gravitational effect was an April Fools' Day hoax, stated to cause a noticeable short-term reduction in gravity on Earth, was first reported by the English astronomer Patrick Moore on BBC Radio 2 on 1 April 1976.
Split into simpler sentences: The Jovian-Plutonian gravitational effect was an April Fools' Day hoax, a phenomenon stated to cause a noticeable short-term reduction in gravity on Earth. It was first reported by the English astronomer Patrick Moore on BBC Radio 2 on 1 April 1976.