Too many to mention - there are about 88 officially recognized constellations and more than 2/3rds of them can be seen from the Northern Hemisphere.
The circumpolar constellations
at night.
2 constellations with 5 stars are Cassiopeia & Cepheus.
ursa major
Orion
constellations
The big dipper.
Yes, all constellations have at least some stars that can be seen with the unaided eye.
Too many to mention - there are about 88 officially recognized constellations and more than 2/3rds of them can be seen from the Northern Hemisphere.
Constellations can be seen EVERY night, ALL the time.
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.
Leo.goegoe