保护地球，探索宇宙，发现文明
2022年3月12日 Point Reyes Milky Way Image Credit & Copyright: Dan Zafra Explanation: Northern winter constellations and a long arc of the Milky Way are setting in this night skyscape looking toward the Pacific Ocean from Point Reyes on planet Earth’s California coast. Sirius, alpha star of Canis Major, is prominent below the starry arc toward the lef...
2022年3月1日 Dueling Bands in the Night Image Credit & Copyright: Jeff Dai (TWAN) Explanation: What are these two bands in the sky? The more commonly seen band is the one on the right and is the central band of our Milky Way galaxy. Our Sun orbits in the disk of this spiral galaxy, so that from inside, this disk appears as a band of comparable brightness a...
2022年2月19日 Peculiar Galaxies of Arp 273 Image Credit & Copyright: Jason Guenzel Explanation: The spiky stars in the foreground of this backyard telescopic frame are well within our own Milky Way Galaxy. But the two eye-catching galaxies lie far beyond the Milky Way, at a distance of over 300 million light-years. Their distorted appearance is due to grav...
2022年2月11日 IC 342: The Hidden Galaxy in Camelopardalis Image Credit & Copyright: Daniel Feller Explanation: Similar in size to large, bright spiral galaxies in our neighborhood, IC 342 is a mere 10 million light-years distant in the long-necked, northern constellation Camelopardalis. A sprawling island universe, IC 342 would otherwise be a prominent gal...
2021年12月21日 Solstice Sun and Milky Way Composite Image Credit & Copyright: Stefan Seip (TWAN) Explanation: Welcome to December’s solstice, first day of winter in the north and summer for the southern hemisphere. Astronomical markers of the seasons, solstice and equinox dates are based on the Sun’s place in its annual journey along the eclipt...
2021年11月06日 The Galaxy Between Two Friends Image Credit & Copyright: Martin Lefranc Explanation: On an August night two friends enjoyed this view after a day’s hike on the Plateau d’Emparis in the French Alps. At 2400 meters altitude the sky was clear. Light from a setting moon illuminates the foreground captured in the simple vertical panor...
2021年11月01日 A Waterfall and the Milky Way Image Credit & Copyright: Xie Jie Explanation: The dream was to capture both the waterfall and the Milky Way together. Difficulties included finding a good camera location, artificially illuminating the waterfall and the surrounding valley effectively, capturing the entire scene with numerous foreground and back...
2021年10月19日 Palomar 6: Globular Star Cluster Image Credit: ESA/Hubble and NASA, R. Cohen Explanation: Where did this big ball of stars come from? Palomar 6 is one of about 200 globular clusters of stars that survive in our Milky Way Galaxy. These spherical star-balls are older than our Sun as well as older than most stars that orbit in our galaxy’s dis...
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 southe...
2021年10月1日 The Central Milky Way from Lagoon to Pipe Image Credit & Copyright: Gabriel Rodrigues Santos Explanation: Dark markings and colorful clouds inhabit this stellar landscape. The deep and expansive view spans more than 30 full moons across crowded star fields toward the center of our Milky Way Galaxy. Cataloged in the early 20th century by astro...