second biggest constellation
In Virgo, and in all other constellations, astronomers can see objects all the way to the edge of the observable universe. Some of these objects are galaxies containing billions of stars.
Virgo is bordered by these constellations: Boötes Coma Berenices Leo Crater Corvus Hydra Libra Serpens Caput
There is no zodiacal constellation north of other zodiacal constellations. A zodiacal constellation is a constellation that is along the ecliptic. There are zodiacal constellations to the left and right of Aquarius (Pisces & Capricornus, respectively), but just other, regular constellations above and below Aquarius.
because the circumpolar constellations are visible all year long and the others are not.
No, it's the other way round - the Little Dipper is part of a constellation, the constellation of Ursa Minor.
Yes, Capricorn borders these other constellations: Aquarius Aquila Sagittarius Microscopium Piscis Austrinus
The Sun does not belong to any constellation. This is because our Earth goes around the Sun. As a result, the Sun moves in the sky relative to the other stars. So, the Sun appears to move through the constellations of the zodiac, which is why you hear that the Sun is in a particular zodiac constellation in a particular month. For example, in September, the Sun is in the constellation of Virgo. In October, it will go to the constellation of Libra, and so on.
The Pisces constellation is actually bordered by several other constellations: Triangulum Andromeda Pegasus Aquarius Cetus Aries
The milky way is not a constellation
That would be a constellation. There are 88 recognized constellations. A subset of a constellation or other set of stars is called an asterism.
Yes - Cancer the Crab and Gemini the Twins
Unfortuately a trip to Mars is only a very tiny distance compared to the distances of stars, so you would definitely see the same constellations as you see here.