Interstelary or Interstellary: How To spell?

The word Interstelary is misspelled against Interstellary, an adjective meaning "Interstellar."

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