Many decades ago, the astronomers on the staff of mount wilson and palomar observatories each received about 60 nights per year for their observing programs. today, an astronomer feels fortunate to get 10 nights per year on a large telescope. can you suggest some reasons for this change?

lexy is right because she has the labeled s

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

the rearrangement of particles in a physical change. hope this