保护地球，探索宇宙，发现文明
2023年3月12日 Saturn’s Hyperion: A Moon with Odd Craters Image Credit: NASA, ESA, JPL, SSI, Cassini Imaging Team Explanation: What lies at the bottom of Hyperion’s strange craters? To help find out, the robot Cassini spacecraft that once orbited Saturn swooped past the sponge-textured moon and took images of unprecedented detail. A six-image mosaic ...
2023年1月16日 Moon Enhanced Image Credit & Copyright: Darya Kawa Mirza Explanation: Our Moon doesn’t really look like this. Earth’s Moon, Luna, doesn’t naturally show this rich texture, and its colors are more subtle. But this digital creation is based on reality. The featured image is a composite of multiple images and enhanced to bring ...
2022年7月16日 Tycho and Clavius at Dawn Image Credit & Copyright: Eduardo Schaberger Poupeau Explanation: South is up in this dramatic telescopic view of the lunar terminator and the Moon’s rugged southern highlands. The lunar landscape was captured on July 7 with the moon at its first quarter phase. The Sun shines at a low angle from the right as da...
2022年7月3日 Phobos: Doomed Moon of Mars Image Credit: HiRISE, MRO, LPL (U. Arizona), NASA Explanation: This moon is doomed. Mars, the red planet named for the Roman god of war, has two tiny moons, Phobos and Deimos, whose names are derived from the Greek for Fear and Panic. These martian moons may well be captured asteroids originating in the main asteroid bel...
2022年6月28日 Mercury from Passing BepiColombo Image Credit & License: ESA, JAXA, BepiColombo, MTM Explanation: Which part of the Moon is this? No part — because this is the planet Mercury. Mercury’s old surface is heavily cratered like that of Earth’s Moon. Mercury, while only slightly larger than Luna, is much denser and more massive th...
2021年8月5日 Tycho and Clavius Image Credit & Copyright: Eduardo Schaberger Poupeau Explanation: South is up in this detailed telescopic view across the Moon’s rugged southern highlands. Captured on July 20, the lunar landscape features the Moon’s young and old, the large craters Tycho and Clavius. About 100 million years young, Tycho is the sh...