The sun is not a year or any other length of time. It is a star. It is the brightest star to us as it is the star that all the planets in our solar system revolve around, therefore it is the closest to us and so it appears the brightest. There are many other stars far larger and brighter than our own but we are not close enough to them to receive their light more than our own sun.
It is only the brightest visible star because of its proximity. It is a very ordinary one.
It's not the brightest sun out there but our is extremely bright for every square meter of it's surface it has the equivalent brightnes of 1000~ 250,000 watt bulbs and there are over 1,000,000,000,000,000 (1000 trillion)square meters of surface!
Jupiter is the second brightest in the world after the sun
Our Sun is the closest star to Earth, therefore, the brightest.
sun is the brightest star in the galaxy
Sirius is the brightest star in the night sky, but the brightest overall is the sun.
Excluding the sun, Sirius appears brightest in the sky from Earth.
It seems to be the brightest because it is the nearest to the earth.
Well the brightest star in our sky is the Sun, and it has a magnitude of -26
The brightest star is the Sun. See related question.
Venus is the brightest thing in the sky, after the Sun and Moon.
The ecliptic.