Perseus constellation. Representing the ancient Greek hero of the same name,this is a large constellation of the Northern hemisphere. It contains the famous variable star Algol (Beta Persei,just below centre). This star varies between magnitude 2.1 and 3.4 with a cycle of just over two days. This is because it is an eclipsing binary,a system of two stars in a mutual orbit which eclipse each other as seen from Earth,blocking the eclipsed star's light for a short time. The Milky Way passes through Perseus,so it contains nebulae (red) and star clusters | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Slawik, Eckhard |
Bildgröße: | 3000 px × 3750 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |