2021年9月19日 Rings and Seasons of Saturn Image Credit & Copyright: Damian Peach/SEN Explanation: On Saturn, the rings tell you the season. On Earth, Wednesday marks an equinox, the time when the Earth’s equator tilts directly toward the Sun. Since Saturn’s grand rings orbit along the […]
2021年9月18日 Rubin’s Galaxy Image Credit: NASA, ESA, B. Holwerda (University of Louisville) Explanation: In this Hubble Space Telescope image the bright, spiky stars lie in the foreground toward the heroic northern constellation Perseus and well within our own Milky Way galaxy. In sharp focus be
2021年9月16日 North America and the Pelican Image Credit & Copyright: Andrew Klinger Explanation: Fans of our fair planet might recognize the outlines of these cosmic clouds. On the left, bright emission outlined by dark, obscuring dust lanes seems to trace a continental shape, lending the popular
2021年9月15日 Cyclone Paths on Planet Earth Image Credit: National Hurricane Center, NOAA, NASA; Processing: Nilfanion (via Wikipedia) Explanation: Where on Earth do cyclones go? Known as hurricanes when in the Atlantic Ocean and typhoons when in the Pacific, the featured map shows the path of all majo
2021年9月14日 Mars Panorama 360 from Curiosity Image Credit: NASA, JPL-Caltech, MSSS; Processing & License: Elisabetta Bonora & Marco Faccin (aliveuniverse.today) Explanation: Which way up Mount Sharp? In early September, the robotic rover Curiosity continued its ascent up the central peak of
2021年9月13日 Night Sky Reflected Image Credit & Copyright: Egon Filter Explanation: What’s that in the mirror? In the featured image of the dark southern sky, the three brightest galaxies of the night are all relatively easy to identify. Starting from the left, these are the Small Magellani
2021年9月12日 A Spiral Aurora over Iceland Image Credit & Copyright: Davide Necchi Explanation: What’s happened to the sky? Aurora! Captured in 2015, this aurora was noted by Icelanders for its great brightness and quick development. The aurora resulted from a solar storm, with high energy p
2021年9月11日 Saturn at Night Image Credit: NASA, JPL-Caltech, Space Science Institute, Mindaugas Macijauskas Explanation: Still bright in planet Earth’s night skies, good telescopic views of Saturn and its beautiful rings often make it a star at star parties. But this stunning view of SaturnR
2021年9月10日 Rosetta’s Comet in View Image Credit & Copyright: Rolando Ligustri (CARA Project, CAST) Explanation: Faint comet Churyumov-Gerasimenko (67P) sweeps past background stars in the constellation Taurus and even fainter distant galaxies in this telescopic frame from September 7. Abo
