天狼星（Sirius）晨间的回归预示着季节更替

天狼星在日出前的回归是季节更替的标志。通过猎户座（Orion）腰带的三颗恒星，可以轻松定位这颗明亮的恒星。

A sign of the changing season is the return of Sirius before sunup. Want to make sure you've spotted Sirius? The 3 stars in Orion's Belt point to it. The post The return of Sirius in the morning signals seasonal change first appeared on EarthSky .