Then he paused, found what he had been looking for, and pointed out one "star" that was slowly moving. I wasn't quite sure I saw the right one.
He told me it was America's first satellite (Explorer 1), and he said I should remember the date: January 31, 1958.
I did remember the "January 31" but I forgot the year until I looked it up much later.
I'm sorry my dad didn't live to see me working at JPL! Today would have been his 87th birthday.