锡拉库萨后方的超级蓝月

锡拉库萨后方的超级蓝月

2023年9月5日 Blue Supermoon Beyond Syracuse Credit & Copyright: Kevin Saragozza Explanation: The last full moon was doubly unusual. First of all, it was a blue moon. A modern definition of a blue moon is a second full moon to occur during one calendar month. Since there are 13 full moons in 2023, one month has to have two — and that month was August. The first full moon was on August 1 and named a Sturgeon Moon. The second reason that the last full moon was unusual was because it was a supermoon. A modern definition of supermoon is a moon that reaches its full phase when it is relatively close to Earth — and so appears a bit larger and brighter than average. Pictured,…

八月的满月

八月的满月

2023年8月30日 Full Moons of August Image Credit & Copyright: Gianni Tumino Explanation: Near perigee, the closest point in its almost moonthly orbit, a Full Moon rose as the Sun set on August 1. Its brighter than average lunar disk was captured in this dramatic moonrise sequence over dense cloud banks along the eastern horizon from Ragusa, Sicily. Illuminating night skies around planet Earth it was the second supermoon of 2023. Yet again near perigee, the third supermoon of 2023 will also shine on an August night. Rising as the Sun sets tonight this second Full Moon in August will be known to some as a Blue Moon, even though scattered sunlight gives the lunar disk a reddened hue. Defined as the second full moon in…

色泽经过夸大的蓝月

色泽经过夸大的蓝月

2021年8月31日 A Blue Moon in Exaggerated Colors Image Credit & Copyright: Robert Fedez Explanation: The Moon is normally seen in subtle shades of grey or gold. But small, measurable color differences have been greatly exaggerated to make this telescopic, multicolored, moonscape captured during the Moon’s full phase. The different colors are recognized to correspond to real differences in the chemical makeup of the lunar surface. Blue hues reveal titanium rich areas while orange and purple colors show regions relatively poor in titanium and iron. The familiar Sea of Tranquility, or Mare Tranquillitatis, is the blue area toward the upper right. White lines radiate across the orange-hued southern lunar highlands from 85-kilometer wide ray-crater Tycho at bottom right. The full moon that occurred earlier this month…

蓝色时段的满月

蓝色时段的满月

2021年8月26日 A Blue Hour Full Moon Image Credit & Copyright: Giorgia Hofer Explanation: Nature photographers and other fans of planet Earth always look forward to the blue hour. That’s the transition in twilight, just before sunrise or after sunset, when the Sun is below the horizon but land and sky are still suffused with a beautiful blue light. After sunset on August 21, this blue hour snapshot captured the nearly full Moon as it rose opposite the Sun, above the rugged Italian Alps from Cortina d’Ampezzo, Italy. Sharing bluish hues with the sky, the rocky pyramid of Monte Antelao, also known as the King of the Dolomites, is the region’s prominent alpine peak. The moonlight is yellow, but even so this full Moon was known…

十月观星指南(2020.10)

十月观星指南(2020.10)

十月会发生什么?,一轮秋月以及蓝月,火星通宵达旦和一场穿越银河系的旅行。 Credit:NASA JPL 翻译:莫辞莫问的莫、林子杰 不仅一个,在月初和月未,这个月将带来两个圆满月。十月一日的满月被称作收获月,收获月是满月的名字,它最接近九月春分。每年两天中的一天,白天和黑夜长度相等。大多数年的收获月在九月落下,但每隔几年,它就会转移到10月。这个名字可以追溯到美洲原住民和欧洲传统,与收获时间有关。 Credit:NASA JPL Credit:NASA JPL 十月底,三十一号,我们将享受第二次满月。当一个月内有两次满月时,第二个满月往往被称作蓝月,蓝月还有另外一个更为传统的定义,但这是最为人熟知的。请注意这是2020年仅有的两次满月。 Credit:NASA JPL 十月是观察火星的好时机,因为这颗行星现在一整晚都可以看到,而且会在午夜时分达到它的最高点,这段能见度极好的时期与被称为“对立”的事件相吻合,约每两年发生一次,当时火星正处于地球与太阳的相对侧,这也是火星和地球在轨道上最接近的时候,这意味着这颗红色行星在天空中是最亮的,所以不要错过它。 Credit:NASA JPL Credit:NASA JPL 来自几个国家的航天器目前正在前往火星的途中,包括美国宇航局的火星2020任务,预计在二月份降落在那里。最后,这个月,是尝试和发现仙女座星系的好时机,仙女座星系也被称为M31,是一个外观与我们银河系接近但大点的螺旋星系,二者都包含干亿颗恒星,但我们认为有万亿颗行星,现在我们看不到银河系的整体形状,因为我们在其中。如果你能从远处看到它,仙女座会让我们了解了我们的星系会是什么样子。 Credit:NASA JPL Credit:NASA JPL 仙女座很微弱,最好用望远镜观察。但是即使在光污染的地区,您也可以使用双筒望远镜甚至是装有好相机的手机进行观察,在非常黑暗的天空下,它几乎肉眼可见,虽然这可能有点挑战性,但亲眼看到整个银河系是值得的。 Credit:NASA JPL 为了寻找仙女座星系,我们需要等天黑后,望向夜空中的东北方向,找到代表女王仙后座的侧面的“ W”,仙后座的右边是仙女座,包括这一串明亮的恒星。向上看,在第二颗明亮的星星的左边,当你回头扫视仙后座时,你会发现一片微弱且模糊的光斑,那块模糊的地方就是位于200万光年之外的仙女座星系。如果你成功了,恭喜!你刚刚进行了一场星际漫游。 Credit:NASA JPL Credit:NASA JPL 这是十月的月相。 Credit:NASA JPL 你可以在nasa.gov了解美国宇航局探索太阳系及更远的所有任务,我是来自美国宇航局喷气推进实验室的普雷斯顿·戴奇斯,这就是这个月的情况。 来源: https://www.jpl.nasa.gov/video/details.php?id=1635