词条 | Praesepe |
释义 | Praesepe astronomy also called Beehive (catalog numbers NGC 2632 and M 44), open, or galactic, cluster of several hundred stars in the zodiacal constellation Cancer and located 590 light-years from Earth. Visible to the unaided eye as a small patch of bright haze, it was first distinguished as a group of stars by Galileo. It was included by Hipparchus in the earliest known star catalog, c. 129 BC. The name Praesepe (Latin: “Cradle,” or “Manger”) was used even before Hipparchus' time. The name Beehive is of uncertain but more recent origin. |
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。