

Wait til you hear about radio astronomy:
The brightest discrete radio source is the Sun (Figure 1.10), but the Sun is much less dominant than it is in visible light. The radio sky is dark even when the Sun is up because atmospheric molecules and dust particles don’t scatter radio waves whose wavelengths are much larger than these particles. Most radio observations can be made day or night. Clouds are also nearly transparent at wavelengths λ>2λ>2 cm, so long-wavelength radio observations can be made even when the sky is overcast.
Fun fact, facebook was originally only for college students, requiring an email address that ended in “.edu”…
Then our parents showed up on facebook, and we noped out. Then facebook sold all of our parents’ facebook data to Donald Trump. Then Donald Trump parroted our parents’ facebook data back at them through Twitter. Then our parents’ thought, “Hey he really gets us”…
We should not have noped out.