Interstellar extinction and the reddening of light by the interstellar medium (ISM) are both caused by _____.
A) atoms and molecules in the ISM
B) only atoms in the ISM
C) only molecules in the ISM
D) only dust in the ISM
E) dust, atoms and molecules of the ISM

Question

Interstellar extinction and the reddening of light by the interstellar medium (ISM) are both caused by _____.
A) atoms and molecules in the ISM
B) only  atoms in the ISM
C) only molecules in the ISM
D) only dust in the ISM
E) dust, atoms and molecules of the ISM

Quizplus · Accepted Answer

The Answer of Interstellar extinction and the reddening of light by the interstellar medium (ISM) are both caused by _____.
A) atoms and molecules in the ISM
B) only  atoms in the ISM
C) only molecules in the ISM
D) only dust in the ISM
E) dust, atoms and molecules of the ISM

Interstellar Extinction and the Reddening of Light by the Interstellar