I'm curious about stars and I am wondering why a star would change its position in the sky due to another star right next to it?
My professor used the term 'local star'. What range of distance is generally considered 'local' for a star? And what would be considered distant?
In many science fiction stories, we hear the term star system that mostly refers to a star and its planets. This is often used interchangeably with the term solar system. But after some research I ...
Ternary (or trinary) stars are not the same as triple stars. So, what is the basic ...
There are various modes of Cepheids like single modes: fundamental (F), first overtone (1O), and likewise. And then we have double modes: F/1O, 1O/2O etc. triple modes: 1O/2O/3O etc. ...
How do scientists know there are about 300 billion stars in a galaxy and there are about 100 billion galaxies?
Just to think about this is mind boggling. But how do scientist get these numbers? What technology/system/theory do they they use?
Pluto is no longer a member of the planets in the solar system. Why was it disqualified as a planet? What is the criteria for classifying an Astronomical Object as a Planet? Does this criteria ...