Interstelar or Interstellar: How To spell?

The word Interstelar is misspelled against Interstellar, an adjective meaning "Between or among the stars; as, interstellar space."

Interstellar has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings interste & ar which should not be misspelled with single 'L'
Wrong Spelling:  interste-l-ar 
Correct Spelling:  interste-ll-ar 
Explore spell check of Interstellar to spell without errors.