The Universe
you call it astronomy
A black hole is an object in space. Astronomy is the study of objects in space. Therefore, black holes would be among the topics covered by astronomy.
== == the astrolabe is to find the altitude of a stellar object
In astronomy its anything that is NOT self illuminating (i.e, is not a star).
[object Object]
The biggest object in the solar system is the sun, and the smallest is Pluto
A BL Lac object is a term used in astronomy for a type of active galaxy with an active galactic nucleus.
It's an object in outer space; that's basically what astronomy is about - studying objects in outer space.
Air.
In astronomy, the amount of light reflected by the Moon - or by any other object - is called "albedo", which literally means "whiteness".In astronomy, the amount of light reflected by the Moon - or by any other object - is called "albedo", which literally means "whiteness".In astronomy, the amount of light reflected by the Moon - or by any other object - is called "albedo", which literally means "whiteness".In astronomy, the amount of light reflected by the Moon - or by any other object - is called "albedo", which literally means "whiteness".
When a light source is only partially blocked and there is only a partial shadow on an object.
astronomy