What do astronomers observe with telescopes?
The functions of life science experiments vital to a good life hydrogen and oxygen constellations quantum world Decaying vegetation Hubble
A B C D E F G H
What do astronomers observe with telescopes? (A) The functions of life (B) science experiments (C) vital to a good life (D) hydrogen and oxygen (E) constellations (F) quantum world (G) Decaying vegetation (H) Hubble