- The brightest stars in the night sky are considered first magnitude stars.
- These are the stars that are easiest to see with the naked eye.
- The brightest star in the night sky, Sirius, is a first magnitude star.
- First magnitude stars have an apparent magnitude of -1.46 or brighter.
29th Magnitude
- 29th magnitude stars are extremely faint and can only be seen with a large telescope.
- These stars are so faint that they are not visible to the naked eye.
- The faintest stars that can be seen with the naked eye are about 6th magnitude.
- 29th magnitude stars have an apparent magnitude of 29.00 or fainter.
The difference between a first magnitude star and a 29th magnitude star is enormous. A first magnitude star is about 100,000,000,000,000 times brighter than a 29th magnitude star. This means that a first magnitude star would appear 100,000,000,000,000 times brighter in the night sky than a 29th magnitude star.