Glossary term: Pisces

Description: Pisces is a constellation in the Zodiac, i.e. the stars that make up this constellation are in the part of the sky that intersects with the ecliptic – with the plane defined by the orbits of the planets in our Solar System. Hence, from our point of view here on Earth, we can regularly find the planets, and also the Sun, in this constellation. In the case of the Sun this is from around mid-March to mid-April, which includes the time of the spring equinox. (Of course if the Sun is there, we cannot see the constellation's stars.) Pisces is one of the 88 modern constellations defined by the International Astronomical Union, but it goes back much further – it was already one of the 48 constellations named by the 2nd century astronomer Claudius Ptolemy.

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The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".