Astronomy

How many constellations can be seen from Earth?

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2008-12-18 20:42:50
2008-12-18 20:42:50

There are 88 official constellations, all of which are visible from Earth, but not from every location.

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Due to the revolution of the earth, certain constellations can be seen at specific times, depending on the position of the earth.


There are no constellations in the Earth. They are in space. There are 88 official constellations.


All of them are. The constellations were all invented by human beings, on Earth. None were invented that can't be seen from Earth.


2 constellations with 5 stars are Cassiopeia & Cepheus.


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.


The answer depends on your location on earth.


Stars are visible at night. Constellations are simply groups of stars as seen from earth, and they are also visible at night.


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


Because earth moves around the sun and therefore it is positioned in different places.


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.


They recede from sight due to the rotation of the earth at these times.


Orion is one of the few constellations that can be seen from anywhere on Earth, but it's not visible in at certain times of year. It's visible in the northern hemisphere in winter. In the southern hemisphere it can be seen for most of the year in many places. (I presume the questioner meant "from where on Earth......".)



No, you do not (in most places on Earth). As the Earth orbits the Sun, it is "in" different constellations during the course of a year. That affects the constellations that you can see at night. However, depending on your latitude, some constellations can be seen all year. That's because they are away from the path of the Sun in the sky and remain above the horizon all the time.


There are 88 "official" constellations recognized by the International Astronomical Union, the body that decides such things.


The earth's position has no affect on constellations' visibility. The position of the viewer on the surface of the earth will affect what constellations are visible.


The patterns seen are called constellations.


Earth revolves around the sun. That is why the constellations we see from Earth appear to change.



Because the planets are closer to the earth than the star that make the constellations are. They are also orbiting the sun along with the earth.


That is true, all the constellations are composed of stars which are part of the Milky Way. Other galaxies are seen by the unaided human eye as cloud-like nebulae, rather than point sources of light.


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.


There are a total of 88 constellations, and all appear on star maps.



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