Gravity is a property of matter - no matter - no gravity.
Similar to electricity - no electrons - no electricity.
There are modern suggestions that matter (mass) is a property of space, but I'm not well up with those ideas.
But, that said, the gravity of the sun keeps the planets in their orbits, though they also inter-react with each other. In the same way as earth and Sun and Moon inter-react with each other.
One curious puzzle, is why the planets are largely in the form of a disk. ???
There is more than one star in the Rigel "system". The main star, in terms of brightness, is Rigel A. That has a surface temperature of about 12,000 degrees Celsius.
Since a galaxy can have many solar systems and a solar system might have more than one planet, for each galaxy there would be many planets. Therefore there would be more planets than galaxies.
In our Galaxy? well as there is no real number as to how many stars we have, scientist believe that there are over 1 billion or 1 000 000 000 stars in the milky way galaxy.
The biggest star known in our galaxy is UY Scuti, a red supergiant located in the constellation Scutum. It has a radius around 1,700 times that of the Sun.
Sure. There are lots of binary star systems. And even ones with more than that. It is more common than many people realize. Our nearest neighbor is a star system with several stars all orbiting each other, or their center of mass, to be more precise.
If by star system you mean more than one star but not a galaxy then Alpha Centauri is the closest star system
Yes. Millions of blue stars exist in our galaxy alone.
A star is one, a galaxy is many.
No. The sun is larger than the average star but is nothing out of the ordinary.
No. A supernova is only a single exploding star and only the mass of one large star is involved. A galaxy is billions of times more massive than even the largest star.
No. A Sun (or star) is one thing; a galaxy is something entirely different. A galaxy is much larger than a star; it contains millions or billions of stars.
A galaxy is far larger. A planetary system involves one or more planets revolving around a single star. A Galaxy consists of billions of stars.
No. Every star in the galaxy is a sun.
if u are talking about a grand star, than you can only get that from a galaxy where bowser is. To get that, u need to get the number of stars on the unopened galaxy that's shaped like bowser and beat him after you do you get the grand star. (there is one bowser or bowser jr. in each dome
No. Sirius is a fairly large star, but it is nothing extraordinary. It only appears brighter than the other stars in the night sky because it is one of the closest stars to us.
The sun is a star but the sun is a star but it is the only one in our galaxy, the milky way.
Sirius is one...