2022年4月9日 Mars-Saturn Conjunction Image Credit & Copyright: Damian Peach Explanation: Fainter stars in the zodiacal constellation Capricornus are scattered near the plane of the ecliptic in this field of view. The two brightest ones at center aren’t stars at all though, but the planets Ma […]
2022年4月8日 Hale-Bopp: The Great Comet of 1997 Image Credit & Copyright: Stefan Seip (TWAN) Explanation: Only twenty-five years ago, Comet Hale-Bopp rounded the Sun and offered a dazzling spectacle in planet Earth’s night skies. Digitized from the original astrophoto on 35mm color slide fil
2022年4月7日 Messier 24: Sagittarius Star Cloud Image Credit & Copyright: Gabriel Rodrigues Santos Explanation: Unlike most entries in Charles Messier’s famous catalog of deep sky objects, M24 is not a bright galaxy, star cluster, or nebula. It’s a gap in nearby, obscuring interstellar
2022年4月6日 Earendel: A Star in the Early Universe Image Credit: NASA, ESA, B. Welch (JHU), D. Coe (STScI); Processing: A. Pagan (STScI) Explanation: Is Earendel the farthest star yet discovered? This scientific possibility started when the Hubble Space Telescope observed a huge cluster of galaxies. T
2022年4月5日 Seven Sisters versus California Image Credit & Copyright: Neven Krcmarek Explanation: On the upper right, dressed in blue, is the Pleiades. Also known as the Seven Sisters and M45, the Pleiades is one of the brightest and most easily visible open clusters on the sky. The Pleiades cont
2022年4月4日 A Vortex Aurora over Iceland Image Credit & Copyright: Christophe Suarez Explanation: No, the car was not in danger of being vacuumed into space by the big sky vortex. For one reason, the vortex was really an aurora, and since auroras are created by particles striking the Earth from s
2022年4月3日 CMB Dipole: Speeding Through the Universe Image Credit: DMR, COBE, NASA, Four-Year Sky Map Explanation: Our Earth is not at rest. The Earth moves around the Sun. The Sun orbits the center of the Milky Way Galaxy. The Milky Way Galaxy orbits in the Local Group of Galaxies. The Local Group f
2022年4月2日 Nova Scotia Northern Lights Image Credit & Copyright: Jason Dain Explanation: This almost otherworldly display of northern lights was captured in clear skies during the early hours of March 31 from 44 degrees north latitude, planet Earth. In a five second exposure the scene looks nort
2022年4月1日 Leaning Tower, Active Sun Image Credit & Copyright: Antonio Tartarini Explanation: The natural filter of a hazy atmosphere offered this recognizable architecture and sunset view on March 27. Dark against the solar disk, large sunspots in solar active regions 2975 and 2976 are wedged b
2022年3月31日 Exploring the Antennae Image Credit & Copyright: Dietmar Hager, Eric Benson Explanation: Some 60 million light-years away in the southerly constellation Corvus, two large galaxies are colliding. Stars in the two galaxies, cataloged as NGC 4038 and NGC 4039, very rarely collide in the
