标签: Earth

2021年度灾难:回顾

In 2021, Hurricane Ida left over 1 million people without power, tornadoes tore across the American Midwest, volcanoes forced people to evacuate their homes, wildfires covered the American West and unusual flooding wreaked havoc on Central Europe. 2021年,飓风艾达导致100多万人断电,龙卷风席卷美国中西部,火山爆发迫使人们撤离家园,野火覆盖美国西部,罕见的洪水对中欧造成严重破坏。 Some characteristics of natural hazards, s...

地球上空的詹姆斯·韦伯太空望远镜

2021年12月26日 James Webb Space Telescope over Earth Image Credit: Arianespace, ESA, NASA, CSA, CNES Explanation: There’s a big new telescope in space. This one, the James Webb Space Telescope (JWST), not only has a mirror over five times larger than Hubble’s in area, but can see better in infrared light. The featured picture shows JWST high above t...

小型(但功能强大)气象仪器

The Compact Ocean Wind Vector Radiometer (COWVR) is no bigger than a minifridge. The Temporal Experiment for Storms and Tropical Systems (TEMPEST) is even smaller – about the size of a cereal box. Yet these two compact science instruments are designed to do a big job: to make the same high-quality atmospheric observations as weather satellites many times the...

看冬至

The Earth’s solstices come twice a year. For the Northern Hemisphere, the summer (June) solstice occurs around June 20-21, and the winter (December) solstice happens around Dec. 21-22. 地球的至日一年有两次。对于北半球来说,夏至发生在6月20-21日左右,冬至发生在12月21-22日左右。 At the solstice, the Sun’s path appears farthest north or south, depending on which half of the planet you are on. S...

南极上空的日食

This image of our home planet shows how Earth looked from more than 950,000 miles, or 1.5 million kilometers, away during the total solar eclipse visible in Antarctica on Dec. 4, 2021. The EPIC instrument on the DSCOVR spacecraft captured the eclipse’s umbra, the dark, inner shadow of planet Earth. Shaped like a cone extending into space, it has a circ...

观星指南(2021.12)

12月的天空会发生什么?傍晚的亮点,捕捉彗星的机会,以及一年一度的双子座流星。 影像来源:NASA/JPL-Caltech 翻译:灼眼的粉丝 12月6日至10日,日落后向西看,月亮依次拜访金星、土星和木星。在这一周的每个晚上,当月亮出现在天空中更高的位置时,它的月牙就会逐渐变圆。 12月6日至10日,月亮在日落后的每个晚上依次拜访金星、土星和木星。 影像来源:NASA/JPL-Caltech 不过,趁着这段时间,享受一下作为昏星的耀眼的金星的景色吧。在这个月里,被云层覆盖的邻星将越来越靠近地平线,对我们大多数人来说,它们在新年之前它们就会消失。近邻行星将在1月下旬以日出前的晨星的形式再次出现,它们直到明年12月才会回到傍晚的天空中。 接下来的12月,有一颗最近发现的彗星正在进入内太阳系,可能值得尝试观察。这颗彗...

从空间站观察地球

As the International Space Station orbits the Earth, the crew makes observations of the universe and our home planet. This image taken from the space station shows the blue-green waters around the Bahamas, as shown in Space Station highlights for the week of Nov. 8, 2021. 当国际空间站绕地球运行时,宇航员对宇宙和我们的地球进行观察。这张从空间站拍摄的照片显示了巴哈马群岛周围的蓝绿色水域,如图所示,这是2021年11月8日这一周的空间站亮点。 I...

来自太阳的粒子在地球上产生了光影秀

The aurora borealis glow on the northern horizon while stars wheel overhead in this long exposure, taken near the Bonneville Salt Flats in Utah on Nov. 4, 2021. Sky watchers in many locations were treated to unusually intense light displays, thanks to a geomagnetic storm created when multiple coronal mass ejections (CMEs) of charged particles from the Sun in...

观星指南(2021.11)

影像来源:NASA/JPL-Caltech 翻译:灼眼的粉丝 11月的天空会发生什么? 日落行星,月偏食和冬季恒星的回归。 从11月6日到11日,日落后,月亮在西南偏南掠过金星、土星和木星。特别是如果你在11月7日走出去看一看,你会发现四天大的新月离金星只有2度。应该很漂亮,所以不要错过它。 11月7日日落后的星空图,显示金星与西南方向的新月只有2度的距离。 影像来源:NASA/JPL-Caltech 而从现在到12月初,你会发现木星和土星每晚都会离金星更近一点。 月偏食即将到来,将于11月18日和19日夜间发生,届时月球将滑入地球的阴影中几个小时。如果天气允许,在月食期间月亮出现在地平线上方的任何位置都可以看到月食。根据你所在的时区,它会在晚上早些时候或晚些时候发生。 显示11月18日至19日月偏食能见度的地...

从太空看到的极光

In this image taken on Oct. 30, 2021, an aurora dimly intersected with Earth’s airglow as the International Space Station flew into an orbital sunrise 264 miles above the Pacific Ocean before crossing over Canada. 在这张拍摄于2021年10月30日的图片中,当国际空间站在飞越加拿大之前在太平洋上空264英里处的轨道上飞行时,极光与地球的气光黯然相交,。 Image Credit: NASA 图片来源:美国宇航局