贝比科隆博号眼里的韦瓦第陨石坑

贝比科隆博号眼里的韦瓦第陨石坑

The cratered surface of a large body is shown: Mercury. The largest feature visible is a large impact crater with two rings, near the image center. Arms from the BepiColumbo spacecraft that took the image are seen extending into the image from the top and the right. Please see the explanation for more detailed information.
图中显示的是一颗大型天体的陨石坑表面:水星。可见的最大特征是靠近图像中心有大型双环陨石坑。拍摄该图像的贝比科隆博号航天器的机械臂从顶部和右侧延伸到图像中。有关更多详细信息,请参阅说明。

早安!月亮

早安!月亮

2024年1月12日 Good Morning Moon Image Credit & Copyright: Michael Luy, Trier Observatory, TWAN Explanation: Yesterday, the Moon was New. But on January 9, early morning risers around planet Earth were treated to the sight of an old Moon, low in the east as the sky grew bright before dawn. Above the city of Saarburg in Rhineland-Palatinate, western Germany, this simple snapshot found the waning Moon’s sunlit crescent just before sunrise. But also never wandering far from the Sun in Earth’s sky, inner planets Venus and Mercury shared the cold morning skyview. In the foreground are the historic city’s tower and castle with ruins from the 10th century. Tomorrow’s picture: circle around the Sun 早安!月亮 影像提供与版权: Michael Luy, Trier Observatory, TWAN 说明: 昨天适逢新月(农历初一)。然而在1月9日,世界各地早起的人们所见到的,却是渐亮天空中低悬在东方的残月。例如于这幅记录德国西部莱茵兰-华尔茨州萨尔堡市天空的影像里,即可见到日出前的一抺蛾眉月。除此之外,还可见到在地球天空中,总是徘徊在太阳附近的内行星─金星与水星,共同分享了这片严寒的清晨美景。这幅影像的前景为这座历史名城的塔楼和城堡,以及来自十世纪的废墟。 明日的图片: circle around…

贝比科隆博号太掠过水星

贝比科隆博号太掠过水星

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 than any Solar System moon because it is made mostly of iron. In fact, our Earth is the only planet more dense. Because Mercury rotates exactly three times for every two orbits around the Sun, and because Mercury’s orbit is so elliptical, visitors on Mercury could see the Sun rise, stop in the sky, go back toward the rising horizon, stop again, and then set quickly over the other horizon. From…

智利清晨的五星联珠

智利清晨的五星联珠

2022年6月17日 Good Morning Planets from Chile Image Credit & Copyright: Elke Schulz (Daniel Verschatse Observatory) Explanation: On June 15, innermost planet Mercury had wandered about as far from the Sun as it ever gets in planet Earth’s sky. Near the eastern horizon just before sunrise it stands over distant Andes mountain peaks in this predawn snapshot from the valley of Rio Hurtado in Chile. June’s other morning planets are arrayed above it, as all the naked-eye planets of the Solar System stretch in a line along the ecliptic in the single wide-field view. Tilted toward the north, the Solar System’s ecliptic plane arcs steeply through southern hemisphere skies. Northern hemisphere early morning risers will see the lineup of planets along the ecliptic at a shallower…

水星的钠尾

水星的钠尾

2022年5月3日 Mercury’s Sodium Tail Image Credit & Copyright: Sebastian Voltmer Explanation: That’s no comet. Below the Pleiades star cluster is actually a planet: Mercury. Long exposures of our Solar System’s innermost planet may reveal something unexpected: a tail. Mercury’s thin atmosphere contains small amounts of sodium that glow when excited by light from the Sun. Sunlight also liberates these molecules from Mercury’s surface and pushes them away. The yellow glow from sodium, in particular, is relatively bright. Pictured, Mercury and its sodium tail are visible in a deep image taken last week from La Palma, Spain through a filter that primarily transmits yellow light emitted by sodium. First predicted in the 1980s, Mercury’s tail was first discovered in 2001. Many tail details were revealed in…

水星与达文西灰光

水星与达文西灰光

2021年7月10日 Mercury and the Da Vinci Glow Image Credit & Copyright: Gabriel Funes Explanation: On July 8th early morning risers saw Mercury near an old Moon low on the eastern horizon. On that date bright planet, faint glow of lunar night side, and sunlit crescent were captured in this predawn skyscape from Tenerife’s Teide National Park in the Canary Islands. Never far from the Sun in planet Earth’s sky, the fleeting inner planet shines near its brightest in the morning twilight scene. Mercury lies just below the zeta star of the constellation Taurus, Zeta Tauri, near the tip of the celestial bull’s horn. Of course the Moon’s ashen glow is earthshine, earthlight reflected from the Moon’s night side. A description of earthshine, in terms of…

观星指南(2021.06)

观星指南(2021.06)

影像来源:NASA/JPL-Caltech 翻译:灼眼的粉丝 6月份的天空会发生什么! 一个日偏食,天蝎座的刺钩,还有属于6月的朱诺号。 6月10日的日食主要在美国东北部和加拿大以及欧洲西北部可见。加拿大东部的一小块区域将见到日环食。 影像来源:NASA/JPL-Caltech 继上个月的月全食之后,六月的日偏食又来了。6月10日,月球将短暂地滑落在地球和太阳之间,部分遮挡我们的太阳。 5月的月食在太平洋一带观赏效果最佳,而本月的日食对美国东北部、加拿大东部和欧洲北部的观众来说将是一种享受。对于美国观众来说,这是一个日出事件,当太阳升起时,月亮似乎已经咬了太阳一口。所以你要找一个朝向东方地平线的清晰视野来观看日偏食。对那些在北方和东方更远地方的人来说,你会看到更多被月亮遮挡的太阳。于欧洲北部的人来说,这更像是一次午餐时间的日食。 (无论你在哪里,请检查日食的安全措施,在没有适当的保护眼睛的情况下,千万不要看向太阳。) 在夏天的夜晚,你可能会看到一群弯曲的星星在南方的天空中爬行。其中有一个明亮的红色灯塔,这是天蝎座——蝎子——从六月开始,是寻找它的最佳时机。 天蝎座的中心是明亮的心宿二,从六月开始是夏季天空的亮点。 影像来源:NASA/JPL-Caltech 这组星星被认为具有蝎子的形状可以追溯到地中海和中东的古代。在希腊神话中,蝎子致命的毒刺杀死了伟大的猎人猎户座,这就是为什么——故事说——我们今天发现他们在天空的两边。 在中国,这种星星图案也被视为巨龙的一部分,在夏威夷则是半神毛伊的鱼钩。这种鱼钩形状也构成了天蝎座的尾巴。 在六月初,如果你在北半球,在傍晚时分,天蝎座的尾巴可能还在你的地平线以下,它在天黑后的头几个小时内升起。但是到了月底,对于大多数观星者来说,天蝎座的尾巴将会在日落之后出现在地平线上。 天蝎座中那颗明亮的、像灯塔一样的恒星是心宿二,它是一颗巨大的红巨星,是天空中最亮的恒星之一。它形成了蝎子炽热的心脏。所以向南看,用心宿二作为你的向导来找到天蝎座。 在2020年12月互换位置之后,土星现在引领着木星穿过天空,在6月比另一颗巨行星早一小时升起。 影像来源:NASA/JPL-Caltech 最后这个月,你会记得在12月的时候,木星和土星在天空中令人难以置信的近距离相遇。在大近合之前,木星在整个2020年都引领着土星穿越天空。6个月后,这对行星继续远离,现在土星在这两颗行星的起落中处于领先位置。午夜后在东方寻找它们,黎明时在南方寻找它们。 关于6月份木星的更多精彩,NASA的朱诺号将于6月8日再次近距离飞越木星。这次它还将在6月7日对行星大小的冰冷卫星木卫三进行一次低空飞越。这是朱诺计划在未来几年内数次飞越木星卫星的第一次,飞越木星的卫星包括冰冷的木卫二和火山喷发的木卫一。 以下是六月的月相。 影像来源:NASA/JPL-Caltech 你可以在NASA.gov上了解NASA所有探索太阳系和其他地区的任务。 我是来自NASA喷气推进实验室的普雷斯顿·戴奇斯,以上就是6月份的天象。 参考来源: https://solarsystem.nasa.gov/resources/2600/whats-up-june-2021-video/

金星、水星及下弦月

金星、水星及下弦月

2020年11月14日 Venus, Mercury, and the Waning Moon Image Credit & Copyright: Kevin Sargozza Explanation: Yesterday, early morning risers around planet Earth were treated to a waning Moon low in the east as the sky grew bright before dawn. From the Island of Ortigia, Syracuse, Sicily, Italy this simple snapshot found the slender sunlit crescent just before sunrise. Never wandering far from the Sun in Earth’s sky, inner planets Venus and Mercury shared the calm seaside view. Also in the frame, right of the line-up of Luna and planets, is bright star Spica, alpha star of the constellation Virgo and one of the 20 brightest stars in Earth’s night. Tomorrow the Moon will be New. The dark lunar disk means mostly dark nights for planet Earth…