Earlier generations of stars in the galaxy could well have had planets. But really, there was only hydrogen and helium to work with, so they'd all be gas giants and not small, rocky planets.
early galaxy generation
Jill Tarter
These are some quotes by American author Jill Tarter Scientist, who was born on January 16, 1944.
Quotes by Jill Tarter
I can actually build my equipment at the back end of the telescope such that it takes the data from all of the separate antennas and adds the signal together with different time delays and different phase shifts - it's as if I were picking out up to eight individual pixels in this large field of view.
