十二月的仲夏夜

十二月的仲夏夜

ByNASA中文

2023年12月23日 A December Summer Night Image Credit & Copyright: Ian Griffin (Otago Museum) Explanation: Colours of a serene evening sky are captured in this 8 minute exposure, made near this December’s solstice from New Zealand, southern hemisphere, planet Earth. Looking south, star trails form the short concentric arcs around the rotating planet’s south celestial pole positioned just off the top of the frame. At top and left of center are trails of the Southern Cross stars and a dark smudge from the Milky Way’s Coalsack Nebula. Alpha and Beta Centauri make the brighter yellow and blue tinted trails, reflected below in the waters of Hoopers Inlet in the Pacific coast of the South Island’s Otago Peninsula. On that short December summer night, aurora australis also…

湖畔的银河

湖畔的银河

ByNASA中文

2022年9月10日 Galaxy by the Lake Image Credit & Copyright: Gerardo Ferrarino Explanation: This 180 degree panoramic night skyscape captures our Milky Way Galaxy as it arcs above the horizon on a winter’s night in August. Near midnight, the galactic center is close to the zenith with the clear waters of Lake Traful, Neuquen, Argentina, South America, planet Earth below. Zodiacal light, dust reflected sunlight along the Solar System’s ecliptic plane, is also visible in the region’s very dark night sky. The faint band of light reaches up from the distant snowy peaks toward the galaxy’s center. Follow the arc of the Milky Way to the left to find the southern hemisphere stellar beacons Alpha and Beta Centauri. Close to the horizon bright star Vega is…

星光和尘埃织就的夜晚

星光和尘埃织就的夜晚

ByNASA中文

2021年10月2日 A Light and Dusty Night Image Credit & Copyright: Rodrigo Guerra Explanation: Posing as a brilliant evening star, Venus lies near the western horizon in this southern hemisphere, early spring, night skyscape. To create the composite view exposures tracking the sky and fixed for the foreground were taken on September 25 from Cascavel in southern Brazil. In view after sunset, Venus appears immersed in a cone of zodiacal light, sunlight scattered from dust along the Solar System’s ecliptic plane. In fact from either hemisphere of planet Earth, zodiacal light is most visible after sunset near a spring equinox, (or before sunrise near an autumn equinox) when its luminous arc lies at steep angles to the horizon. Extending above the sunset on this night, the…