There are many unidentified bands in the spectra of stars. Wide bands are produced by some complex molecules in the interstellar space.
![There are many unidentified bands in the spectra of stars. Wide bands are produced by some complex molecules in the interstellar space.](http://cdn.quoteddaily.com/images/garik-israelian/there-are-many-unidentified-bands-in-the-spectra-of-stars-wide-bands-are-produced-by-some-complex-molecules-in-the.jpg)
There are many unidentified bands in the spectra of stars. Wide bands are produced by some complex molecules in the interstellar space.