按月归档: 6 月 2021

美国德州上空的超级胞雷暴系统

2021年06月13日 A Supercell Thunderstorm Over Texas Video Credit & Copyright: Mike Olbinski; Music: Impact Lento (Kevin MacLeod, Incompetech) Explanation: Is that a cloud or an alien spaceship? It’s an unusual and sometimes dangerous type of thunderstorm cloud called a supercell. Supercells may spawn damaging tornados, hail, downbursts of air, or dren...

公民科学家在一颗类似太阳的恒星周围发现两颗气态行星

晚上,七岁的米格尔喜欢和他的父亲塞萨尔·卢比奥(Cesar Rubio)谈论行星和恒星。“我试图培养这种能力,”卢比奥说,他是加州波莫纳的一名机械师,为采矿和发电设备制造零部件。 在这张艺术家的渲染图中,两颗气态行星围绕着明亮的恒星HD 152843运行。这些行星是通过公民科学项目行星猎人TESS与专业科学家合作发现的。 图片来源:NASA/Scott Wiessinger 现在,这个男孩可以声称他的父亲也帮助发现了行星。塞萨尔·卢比奥是行星猎人TESS的数千名志愿者之一。行星猎人TESS是一个由NASA资助的公民科学项目,旨在寻找太阳系以外的行星或系外行星的证据。公民科学是公众与科学家合作的一种方式。全球已有超过2.9万人加入了行星猎人TESS项目,以帮助科学家寻找系外行星。 塞萨尔·卢比奥和儿子米格尔(Mi...

水面上的日食

2021年06月12日 Eclipse on the Water Image Credit & Copyright: Elliot Severn Explanation: Eclipses tend to come in pairs. Twice a year, during an eclipse season that lasts about 34 days, Sun, Moon, and Earth can nearly align. Then the full and new phases of the Moon separated by just over 14 days create a lunar and a solar eclipse. Often partial eclipses ar...

地球的大气辉光和星迹

The beauty of our home planet is shown in this long exposure photograph. Taken from the International Space Station as it orbited 267 miles above the Indian Ocean, it reveals Earth’s atmospheric glow and star trails. Image Credit: NASA 这张长时间曝光的照片展示了我们星球的美丽。这张照片是由国际空间站在印度洋上空267英里的轨道上拍摄的,它显示了地球的大气辉光和星迹。 图片来源:美国国家航空航天局

日偏食

A partial solar eclipse is seen as the Sun rises behind the United States Capitol Building, Thursday, June 10, 2021, as seen from Arlington, Virginia. The annular or “ring of fire” solar eclipse is only completely visible in Greenland, Northern Russia, and Canada. Image Credit: NASA/Bill Ingalls 2021年6月10日,星期四,在弗吉尼亚州的阿灵顿,太阳从美国国会大厦后面升起,图为日偏食。只有在格陵兰岛、俄罗斯北部和加拿大...

飞鸟与日食

2021年06月11日 Eclipse Flyby Image Credit & Copyright: Zev Hoover, Christian Lockwood, and Zoe Chakoian Explanation: On June 10 a New Moon passed in front of the Sun. In silhouette only two days after reaching apogee, the most distant point in its elliptical orbit, the Moon’s small apparent size helped create an annular solar eclipse. The brief but s...

日晕

2021年06月10日 Circular Sun Halo Image Credit & Copyright: Vincenzo Mirabella Explanation: Want to see a ring around the Sun? It’s easy to do in daytime skies around the world. Created by randomly oriented ice crystals in thin high cirrus clouds, circular 22 degree halos are visible much more often than rainbows. This one was captured by smart phone ...

毅力号火星车开始其在火星上的首次科学活动

毅力号的Mastcam-Z成像系统在范·齐尔远望台拍摄了这张360度全景图,在机智号直升机首次飞行期间,火星车停在这里。这幅24亿像素的全景图由992张图片拼接而成。 影像来源:NASA/JPL-Caltech/ASU/MSSS 这位六轮科学家正向南探索杰泽罗火山口的湖床,寻找古代微生物生命的迹象。 6月1日,NASA的毅力号火星车离开“奥克塔维亚·E·巴特勒”着陆点,拉开了其任务的科学阶段。直到最近,火星车一直在进行系统测试或调试,并支持机智号火星直升机一个月的飞行测试。 在这第一次科学活动的前几周,任务小组将把火星车开到一个低洼的远望台,火星车可以在那里勘测杰泽罗火山口的一些最古老的地质特征,并且他们将上线火星车的自动导航和采样系统。 这张向西望向Séítah火星地质单元的图片是由NASA的机智号火星直升机...

银河炖牛肉

One definition for goulash, according to the Merriam-Webster dictionary, is a mixture of heterogeneous elements, or jumble. This 2017 image of galaxy Arp 299 is just that. Arp 299 is a system located about 140 million light-years from Earth, containing two galaxies that are merging, which has created a partially blended mix of stars from each galaxy. Data fr...

全食月与月华

2021年06月09日 A Total Lunar Eclipse Corona Image Credit & Copyright: Helmut Eder Explanation: This moon appears multiply strange. This moon was a full moon, specifically called a Flower Moon at this time of the year. But that didn’t make it strange — full moons occur once a month (moon-th). This moon was a supermoon, meaning that it reached it...