It is closer to us.
The sun appears brighter than Sirius does because it is about half a million times closer to us.
Yes it is much bigger.Probably 5 suns can fit in sirius.Not only is sirius bigger but it is much hotter as well.
Venus has an apparent magnitude [See related link] of -3.82 when it is opposite from the Sun, whereas Sirius has an apparent magnitude of -1.47. So Venus is always brighter (When seen) than Sirius.
I'm not too sure what other people think. I know that the Sun shines brighter than Sirius.
Neither. The Sun only appears bright because it is close. Sirius is far larger and brighter than our Sun. Our Sun is probably in the top 40% of all stars in the Milky Way, while Sirius is probably in the top 5%. But there are many other stars that are far brighter even that Sirius.
No. There is no such thing as an "earth-like star" as Earth is a planet, not a star. Sirius A is a star that is larger and brighter than the sun.
Sirius is about 25 times as bright as our Sun. That refers to the absolute magnitude; of course, our Sun looks much brighter to us, because it is closer.
Observed from Earth there are no brighter stars at the night sky. If you see something that is brighter, it will be a planet.
Sirius has a lower absolute magnitude than Rigel. Sirius is one of the brightest stars in the sky with an absolute magnitude of 1.42, while Rigel has an absolute magnitude of -8.1, making it much brighter than Sirius.
Sirius appears brighter than Pollux because it is closer to Earth and is a more luminous star. Sirius is also a hot, blue star compared to Pollux, which is a cooler, orange giant star, further contributing to the difference in brightness.
Yes
Aldebaran is both hotter and brighter than Sirius. Aldebaran, a K-type giant star, has a surface temperature of about 4,000 K and a luminosity approximately 440 times that of the Sun. In contrast, Sirius, an A-type main-sequence star, has a surface temperature of around 9,900 K but is less luminous than Aldebaran, at about 25 times the Sun's luminosity. Therefore, while Sirius is hotter, Aldebaran outshines it in brightness.