The low star in the northwest sky is likely the North Star, also known as Polaris. Polaris is located almost exactly at the north celestial pole and serves as a reliable marker for navigational purposes.
Find your latitude and that is the altitude of Polaris in the sky.
People who live in Australia can indeed see the star Polaris. They just have to visit the northern hemisphere to do it. The earth's axis has a reasonably stable orientation toward north/south; thanks to the stabilizing effect of the moon, it doesn't swing wildly out of place. So people viewing the sky from closer to the north pole can see the northern sky and not the southern sky. People viewing the sky from closer to the south pole can see the southern sky and not the northern. Polaris is very close to the point the north pole actually points to, which is why it is called 'Polaris', the pole star.
Polaris is listed as F7 in the Sky Catalogue 2000.0.
No, Polaris is always in the same spot in the sky.
Zero.Zero.Zero.Zero.
polaris
No. The brightest star in the night sky is Sirius.
cassiopea, Orion and polaris
To locate Polaris in the night sky, find the Big Dipper constellation and follow the two outer stars in the bowl of the dipper to locate Polaris, which is the brightest star in the Little Dipper constellation. Polaris is also known as the North Star and is located almost directly above the North Pole.
Yes, it is very important to observers in the North Hemisphere. Great telescopes still align themselves with Polaris. Many amateurs, including myself, align their scopes with Polaris. This is know as polar alignment. It's to this day one of the most accurate forms of alignment.
The altitude of Polaris and the latitude of an observer are directly related. The altitude of Polaris in the sky is approximately equal to the observer's latitude in the Northern Hemisphere. The higher the latitude, the higher Polaris will appear in the sky.