It's impossible to say definitively which are the "most common" stars you see at night, because that depends on your location and the time of year. However, some stars are consistently bright and easily visible from most parts of the world. Here are some of the most prominent:

Northern Hemisphere:

* Sirius: The brightest star in the night sky, located in the constellation Canis Major.

* Arcturus: A bright orange star in the constellation Boötes.

* Vega: A blue-white star in the constellation Lyra.

* Capella: A yellow giant star in the constellation Auriga.

* Rigel: A blue supergiant star in the constellation Orion.

* Betelgeuse: A red supergiant star in the constellation Orion.

* Procyon: A white star in the constellation Canis Minor.

* Altair: A white star in the constellation Aquila.

* Deneb: A blue-white supergiant star in the constellation Cygnus.

* Polaris (North Star): Located near the celestial north pole, this star appears to be stationary in the sky.

Southern Hemisphere:

* Canopus: The second brightest star in the night sky, located in the constellation Carina.

* Alpha Centauri: Actually a triple star system, the brightest star in the constellation Centaurus.

* Achernar: A blue-white star in the constellation Eridanus.

* Hadar (Beta Centauri): A blue giant star in the constellation Centaurus.

* Rigil Kent (Alpha Centauri C): A red dwarf star in the Alpha Centauri system.

Remember, the visibility of stars also depends on light pollution in your area. If you live in a city with a lot of light, you might only see the brightest stars. However, if you go to a dark location, you'll be able to see many more stars.

You can use a stargazing app like Stellarium or SkySafari to identify the stars you see. These apps can help you navigate the night sky and learn about the constellations and objects you're looking at.