Did Penzias discover the entire universe is contained in the milky way?

Determine the maximum r-value of the polar equation r =3+3 cos 0

Consider an ideal gas at 27.0 degrees celsius and 1.00 atmosphere pressure. imagine the molecules to be uniformly spaced, with each molecule at the center of a small cube. what is the length l of an edge of each small cube if adjacent cubes touch but don't overlap?

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?