But no astronomer has seen this object since 1791.

Astrophysicists use physics to explain what astronomers find and see.

Too much light can make it so that the astronomers cannot see out of the telescope very well.

No other astronomer has ever seen the moon that Pickering said he saw.

But the universe that astronomers are seeing with greater detail does not seem to fit either model.

When an exoplanet passes between its sun and the Earth, astronomers can see a change in light from the star.

We now recognize that astronomers on any galaxy would see all the others running away .

Until recently some of its predictions were at odds with what astronomers see in the sky.

Training their sights in other directions, astronomers saw no pattern at all.

That, in a nutshell, is what the astronomers saw, minus the people, of course.