2025年1月11日
An Evening Sky Full of Planets
Image Credit & Copyright: Dario Giannobile
Explanation: Only Mercury is missing from a Solar System parade of planets in this early evening skyscape. Rising nearly opposite the Sun, bright Mars is at the far left. The other naked-eye planets Jupiter, Saturn, and Venus, can also be spotted, with the the position of too-faint Uranus and Neptune marked near the arcing trace of the ecliptic plane. On the far right and close to the western horizon after sunset is a young crescent Moon whose surface is partly illuminated by earthshine. In the foreground of the composite panorama captured on 2 January, planet Earth is represented by Mount Etna’s lower Silvestri Crater. Of course Earth’s early evening skies are full of planets for the entire month of January. On 13 January, a nearly Full Moon will appear to pass in front of Mars for skywatchers in the continental U.S. and Eastern Canada.
Tomorrow’s picture: small moon, big crater
满是行星的傍晚天空
影像提供与版权: Dario Giannobile
说明: 在这幅傍晚的天空景观里，太阳系的行星几乎悉数登场，唯有水星缺席。视野的最左侧，有位于冲点附近的明亮火星。其他肉眼可见的行星，诸如木星、土星和金星也都历历在目，而过于昏暗、位于黄道面弧附近的天王星与海王星，其位置则特别加以标示。位于右缘，新月低悬于日落后的西方地上方，其表面受到地球反照光的照耀。这张摄于1月2日的拼接全景影像的地球前景，为义大利埃特纳火山下方的西尔维斯特里火山口。当然，在整个1月，地球的傍晚天空中都能看到这些行星。而在1月13日，几乎满相的明月将通过火星前方，届时位于美国本土与加拿大东部的观星者，可望见到这个月掩火星的景观。
明日的图片: small moon, big crater
