保护地球，探索宇宙，发现文明
This illustration shows the lightning phenomenon known as a sprite and what a sprite could look like in Jupiter’s atmosphere. Named after a mischievous, quick-witted character in English folklore, sprites last for only a few milliseconds. They feature a central blob of light with long tendrils of light extending down toward the ground and upward. In Ea...
2020年10月20日 Saturn and Jupiter over Italian Peaks Image Credit & Copyright: Giorgia Hofer Explanation: Saturn and Jupiter are getting closer. Every night that you go out and check for the next two months, these two bright planets will be even closer together on the sky. Finally, in mid-December, a Great Conjunction will occur — when the two planet...
2020年10月19日 A Flight over Jupiter Near the Great Red Spot Image Credit: NASA/JPL-Caltech/SwRI/MSSS; Video Processing & License: Kevin M. Gill; Music: Vangelis Explanation: Are you willing to wait to see the largest and oldest known storm system in the Solar System? In the featured video, Jupiter’s Great Red Spot finally makes its appearance 2 minu...
Cyclones at the north pole of Jupiter appear as swirls of striking colors in this extreme false color rendering of an image from NASA’s Juno mission. The huge, persistent cyclone found at Jupiter’s north pole is visible at the center of the image, encircled by smaller cyclones that range in size from 2,500 to 2,900 miles (4,000 to 4,600 kilometers). Together...
我们来自何处？是否是唯一的存在？在地球以外的其他行星上寻找生命迹象，将是迄今为止我们作为生命存在所面临最大问题之一。 下面这段视频来自麻省理工学院的两名科学家，为大家讲解9月14日在金星大气中的发现。 Credit：MIT 2020年9月4日，天文学家们宣布在金星大气中，发现了磷化氢（phosphine），这是一种潜在的生物标记（biomarker），以下是英国皇家天文学会有关这次发现的十个问答。 Credit ESO / M. Kornmesser / L. Calçada & NASA / JPL / Caltech 问题一：这次发现了什么？ 答：天文学家们在金星大气层中发现了磷化氢分子。 问题二：为什么会（如此）令人关注呢？ 答：科学家们在金星大气中检测到的磷化氢数量相对较大，在地球上，磷化氢可以...
2020年9月10日 Jupiter’s Swimming Storm Image Credit & Copyright: Andy Casely Explanation: A bright storm head with a long turbulent wake swims across Jupiter in these sharp telescopic images of the Solar System’s ruling gas giant. Captured on August 26, 28, and September 1 (left to right) the storm approximately doubles in length during that pe...
2020年9月7日 The Milky Way over St Michael’s Mount Image Credit: Simon R. Hudson Explanation: Where do land and sky converge? On every horizon — but in this case the path on the ground leads to St Michael’s Mount (Cornish: Karrek Loos yn Koos), a small historic island in Cornwall, England. The Mount is usually surrounded by shallow water, but ...
2020年9月2日 Jupiter and the Moons Image Credit & Copyright: Robert Fedez Explanation: How many moons do you see? Many people would say one, referring to the Earth’s Moon, prominent on the lower left. But take a closer look at the object on the upper right. That seeming-star is actually the planet Jupiter, and your closer look might reveal that it is...
2020年8月14日 Jupiter and Saturn Rising Beyond Alien Throne Rock Image Credit & Copyright: Marcin Zając Explanation: What planets are those behind that unusual rock spire? Saturn (lower left) and Jupiter. This month, after sunset, the bright planetary duo are quite prominent toward the southeast. Now your view of our Solar System’s largest planets mi...
2020年8月11日 Churning Clouds on Jupiter Image Credit & License: NASA/JPL-Caltech/SwRI/MSSS; Processing: Kevin M. Gill Explanation: Where is Jupiter’s ammonia? Gaseous ammonia was expected to be seen in Jupiter’s upper atmosphere by the orbiting Juno spacecraft — but in many clouds is almost absent. Recent Juno data, however, gives some c...