'Sol' also known as the sun is the only star in our solar system and is therefore the biggest one. If you meant planets than that would be Jupiter.
what is the biggest star in the galaxy
Obviously, the Universe is the biggest of that lot. Next biggest is "galaxy", then solar system, then star, then moon. A comet is usually bigger than a meteorite, but not always.
When you hear M100 regarding a galaxy, it is likely referring to the Messier 100 galaxy. It was discovered by Pierre M̩chain and entered into Messier's catalog of nebulae and star clusters, which is where it got its name.
Sirius is the brightest star in the night sky of earth not a galaxy
All stars we currently know of are part of a galaxy. Stars are born within galaxies from clouds of gas and dust. If a star were to exist without belonging to a galaxy, it would likely be a result of very rare and extreme circumstances, such as being ejected from its parent galaxy due to a collision or interaction with another galaxy.
See related questions
Eta Carinae.
We will never know the largest star in the Universe. The biggest star in our Galaxy is VY Canis Majoris.
what is the biggest star in the galaxy
The Biggest star is called the VY Canis majoris. The sun is invisible compared to this super giant star. I researched and it said that 7 quadrillion earths can fit in the Great VY Canis Majoris. Known to be the biggest star in our galaxy.
There are 400 billion stars in our galaxy - we can't name them all.
universe, molecular cloud, galaxy, star, planet, asteroid,atom
Obviously, the Universe is the biggest of that lot. Next biggest is "galaxy", then solar system, then star, then moon. A comet is usually bigger than a meteorite, but not always.
Sirius is one...
the sun
It may be the coolest star, but it is not the biggest star known to man. The biggest star known to man is called VY Canis Majoris. It's almost bigger than our GALAXY, which is VERY big.
The North Star