Pulsars is a 7 letter English word. It's valid Scrabble word worth 8 points. It's valid Words with friends word worth 11 points.
You can make 157 anagrams from letters in pulsars (alprssu).
1965-70; puls(ating st)ar, on the model of quasar
The first clue is the behavior of a pulsar—a tiny but massive object that rapidly rotates, sending flashes of light toward Earth.