Because we are in the Milky Way galaxy, where there are huge numbers of stars
in every direction from us that can be seen any time the sun isn't up in the sky.
If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.
The constellations near the plane of the ecliptic (the zodiacal constellations) are only visible at certain times of the year. The constellations towards the poles (N and S) are visible at all times of the year from their respective hemispheres. In the South, the Southern Cross would be one example and in the North the Great Bear (or plough) would be another.
All the constellations were fixed to a crystal sphere that rotates at a slightly different rate from the Sun's rotation rate. So while the Sun goes round 365 times in a year, the sphere of the constellations go round 366 times.
Draco can be seen all year around, but the best time to spot this constellation is during the month of July. If you are looking north during the summer months, Draco is facing upright, but as the year goes on it slowly flips upside down. You can see Draco year-round in the northern hemisphere. The best viewing for Draco is during July at 80o above the horizon line while looking North.
What constellations are circumpolar (visible all year, at any time of the night) depends on your latitude. If you are (for example) at a latitude of 50° north, then any start that is 50° or less from the sky's north pole will never go below the horizon. For a more detailed explanation, read the Wikipedia article on "Circumpolar star".
The circumpolar constellations
If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.If you live in the northern hemisphere, Ursa Minor can be seen in every month of the year. It is one of the constellations that never sets, so it can be seen all year round.
Circumpolar constellations are visible all year long, depending on where you are viewing them from. At the north pole, or the south pole, some constellations are visible year-round, these are the circumpolar constellations. On the equator, there are no circumpolar constellations because of the earths rotation, that is why circumpolar constellations are at the "poles". Some of the circumpolar constellations can also be viewed from other parts of the same hemisphere, such as the big dipper and the little dipper, although they are circumpolar, they are also seen in other parts of the northern hemisphere. Circumpolar constellations in the northern hemisphere, will never be seen at the south pole, and vice versa. I hope this helped.
It can be seen every year, like all constellations can be. It is best viewed from the southern hemisphere.
It is both, as Cassiopeia is one of the constellations that can be seen all year round.
Circumpolar constellations are visible all year long, depending on where you are viewing them from. At the north pole, or the south pole, some constellations are visible year-round, these are the circumpolar constellations. On the equator, there are no circumpolar constellations because of the earths rotation, that is why circumpolar constellations are at the "poles". Some of the circumpolar constellations can also be viewed from other parts of the same hemisphere, such as the big dipper and the little dipper, although they are circumpolar, they are also seen in other parts of the northern hemisphere. Circumpolar constellations in the northern hemisphere, will never be seen at the south pole, and vice versa. I hope this helped.
constellations
Constellations can be seen EVERY night, ALL the time.
Yes, all constellations have at least some stars that can be seen with the unaided eye.
The constellations of the zodiac fall on the plane of the ecliptic (the plane in which the Earth orbits the Sun) and all the Sun's planets orbit also in the plane of the ecliptic. This means that ALL the planets eventually move through ALL the zodiacal constellations (as seen from Earth). It also therefore follows that the planets are never seen in the non zodiacal constellations.
Every season - we see the constellations throughout the year, every night, every week, every month.
All of them are. The constellations were all invented by human beings, on Earth. None were invented that can't be seen from Earth.