Did you know the first planets to be discovered outside our solar system were given the rather ominous names Poltergeist and Phobetor?⁣ ⁣ Known as exoplanets they were discovered in 1992. Before that, we didn't know if planets existed outside our solar system.⁣ ⁣ The two astronomers who discovered them, Alex Wolszczan and Dale Frail, weren't actually hunting for other planets. They were studying pulsars - dead, rapidly rotating neutron stars - at the Arecibo Observatory in Puerto Rico. Noticing