Local astronomy
Most school's mainly teach the solar system when they teach astronomy.
Most observers seem to concentrate on the solar system too.
Maybe that is because of light pollution, faint objects are too hard for most of us to see.
It is only 4 hours to Neptune at the speed of light and 4.3 years to the nearest star (apart from the Sun) alpha Centauri.
Why do we spend most of our time looking in our astronomical backyard?
PS Neptune is only 34' from Jupiter tonight. mu Cap (mag 5.1) is between Jupiter and Neptune.
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