词条 | Canopus |
释义 | Canopus ancient city, Egypt Greek Kanopos ancient Egyptian (Egypt, ancient) city on the western coast of the Nile River delta, in Al-Iskandariyyah muḥāfaẓah (governorate). The Canopic branch of the Nile is entirely silted up, but on the shore about 2 miles (3 km) from Abū Qīr there are extensive remains, including the temple of the Greco-Egyptian god Serapis. Canopus was a centre of the ointment industry and a pleasure resort for the people of Alexandria. ![]() star also called Alpha Carinae second brightest star (after Sirius) in the night sky, with a visual magnitude of −0.73. Lying in the southern constellation Carina, about 300 light-years from the Earth, Canopus is sometimes used as a guide in the attitude control of spacecraft because of its angular distance from the Sun and the contrast of its brightness among nearby celestial objects. The Syrian Stoic philosopher Poseidonius (c. 135–50 BC) used sightings of Canopus near the horizon in his estimation of the size of the Earth. |
随便看 |
|
百科全书收录100133条中英文百科知识,基本涵盖了大多数领域的百科知识,是一部内容开放、自由的电子版百科全书。