Crew-7机组成员抵达进行发射前活动

Crew-7机组成员抵达进行发射前活动

ByNASA中文

NASA’s SpaceX Crew-7 mission is the seventh crew rotation mission of the SpaceX Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. The crew members (Roscosmos cosmonaut Konstantin Borisov, left, European Space Agency astronaut Andreas Mogensen, second from left, NASA astronaut Jasmin Moghbeli, second from right, and Japan Aerospace Exploration Agency astronaut Satoshi Furukawa, right) spoke at the Launch and Landing Facility at NASA’s Kennedy Space Center in Florida on Aug. 20, 2023, ahead of the agency’s SpaceX Crew-7 mission. Moghbeli, Mogensen, Furukawa, and Borisov are scheduled to launch at 3:49 a.m. EDT on Aug. 25. See coverage for Crew-7 and follow all live events at nasa.gov/live. Image Credit: NASA/Joel Kowsky 美国宇航局的SpaceX Crew-7任务是SpaceX龙飞船和猎鹰9号火箭前往国际空间站的第七次机组成员轮换任务，这是该机构商业机组计划的一部分。2023年8月20日，在NASA SpaceX Crew-7任务开始之前，机组成员（俄罗斯联邦航天局宇航员康斯坦丁·鲍里索夫，左二，欧洲航天局宇航员安德烈亚斯·莫根森，左二，美国宇航局宇航员贾斯敏·莫格贝里，右二，日本宇宙航空研究开发机构宇航员古川聡，右）在NASA佛罗里达州肯尼迪航天中心的发射和着陆设施上发表了讲话。莫格贝里、莫根森、古川聡和博里索夫计划于美国东部时间8月25日凌晨3点49分发射。…

开心果星云

开心果星云

ByNASA中文

2023年8月22日 The Pistachio Nebula Credit & Copyright: Bray Falls & Chester Hall-Fernandez Explanation: This nebula had never been noted before. Newly discovered nebulas are usually angularly small and found by professionals using large telescopes. In contrast, the Pistachio Nebula was discovered by dedicated amateurs and, although faint, is nearly the size of the full Moon. In modern times, amateurs with even small telescopes can create long exposures over sky areas much larger than most professional telescopes can see. They can therefore discover both previously unknown areas of extended emission around known objects, as well as entirely unknown objects, like nebulas. The pictured Pistachio Nebula is shown in oxygen emission (blue) and hydrogen emission (red). The nature of the hot central star is currently unknown, and…

西村彗星

西村彗星

ByNASA中文

2023年8月21日 Introducing Comet Nishimura Credit & Copyright: Dan Bartlett Explanation: Will Comet Nishimura become visible to the unaided eye? Given the unpredictability of comets, no one can say for sure, but it currently seems like a good bet. The comet was discovered only ten days ago by Hideo Nishimura during 30-second exposures with a standard digital camera. Since then, C/2023 P1 Nishimura has increased in brightness and its path across the inner Solar System determined. As the comet dives toward the Sun, it will surely continue to intensify and possibly become a naked-eye object in early September. A problem is that the comet will also be angularly near the Sun, so it will only be possible to see it near sunset or sunrise. The comet…

美国威斯康辛州上空的卷轴云

美国威斯康辛州上空的卷轴云

ByNASA中文

2023年8月20日 A Roll Cloud Over Wisconsin Credit: Megan Hanrahan (Pierre cb), Wikipedia Explanation: What kind of cloud is this? A type of arcus cloud called a roll cloud. These rare long clouds may form near advancing cold fronts. In particular, a downdraft from an advancing storm front can cause moist warm air to rise, cool below its dew point, and so form a cloud. When this happens uniformly along an extended front, a roll cloud may form. Roll clouds may actually have air circulating along the long horizontal axis of the cloud. A roll cloud is not thought to be able to morph into a tornado. Unlike a similar shelf cloud, a roll cloud is completely detached from their parent cumulonimbus cloud. Pictured here, a…

海王星：带环冰质巨行星

海王星：带环冰质巨行星

ByNASA中文

2023年8月19日 Ringed Ice Giant Neptune Image Credit: NASA, ESA, CSA, STScI, NIRCam Explanation: Ringed ice giant Neptune lies near the center of this sharp near-infrared image from the James Webb Space Telescope. The dim and distant world is the farthest planet from the Sun, about 30 times farther away than planet Earth. But in the stunning Webb view, the planet’s dark and ghostly appearance is due to atmospheric methane that absorbs infrared light. High altitude clouds that reach above most of Neptune’s absorbing methane easily stand out in the image though. Coated with frozen nitrogen, Neptune’s largest moon Triton is brighter than Neptune in reflected sunlight, seen at the upper left sporting the Webb telescope’s characteristic diffraction spikes. Including Triton, seven of Neptune’s 14 known…

哈勃望远镜拍摄到宇宙星系团

哈勃望远镜拍摄到宇宙星系团

ByNASA中文

The massive cluster Abell 3322 is featured in this image from the NASA/ESA Hubble Space Telescope, in which the galaxy 2MASX J05101744-4519179 basks in the center. This distant galaxy cluster is a cosmic leviathan that is highly luminous at X-ray wavelengths. Observing galaxy clusters like Abell 3322 can advance our understanding of the evolution and interactions of dark and luminous matter in galaxy clusters, and also reveals powerful gravitational ‘telescopes’ that magnify distant objects through gravitational lensing. Knowing the location of these lenses can enable future observations with both Hubble and the NASA/ESA/CSA James Webb Space Telescope. The galaxy cluster is located in the constellation Pictor, around 2.6 billion light-years from Earth. Two of Hubble’s instruments joined forces to create this image: Wide Field Camera…

冥王星的北部

冥王星的北部

ByNASA中文

2023年8月18日 Northern Pluto Image Credit: NASA, Johns Hopkins Univ./APL, Southwest Research Institute Explanation: Gaze across the frozen canyons of northern Pluto in this contrast enhanced color scene. The image data used to construct it was acquired in July 2015 by the New Horizons spacecraft as it made the first reconnaissance flight through the remote Pluto system six billion kilometers from the Sun. Now known as Lowell Regio, the region was named for Percival Lowell, founder of the Lowell Observatory. Also famous for his speculation that there were canals on Mars, Lowell started the search that ultimately led to Pluto’s discovery in 1930 by Clyde Tombaugh. In this frame Pluto’s North Pole is above and left of center. The pale bluish floor of the broad canyon…

学生实验在NASA沃洛普斯飞行设施的探空火箭上发射升空

学生实验在NASA沃洛普斯飞行设施的探空火箭上发射升空

ByNASA中文

A Terrier-Improved Orion sounding rocket carrying students experiments for the RockOn! mission successfully launched from NASA’s Wallops Flight Facility Aug. 17 at 6 a.m. EDT. The launch carried experiments for Cubes in Space, RockOn!, and RockSat-C student programs. The sounding rocket reached an altitude of 103 miles (116.7 kilometers) before descending back down into the Atlantic Ocean via parachute. Teams will review the payload to return the experiments back to the students. Photo Credit: NASA/Danielle Johnson 美国东部时间8月17日早上6点，一枚由小猎犬改进的猎户座探空火箭携带着学生实验RockOn!任务从NASA的瓦勒普斯飞行设施成功发射升空。这次发射进行了太空立方体实验，RockOn！和RockSat-C学生项目。探空火箭到达了103英里(116.7公里)的高度，然后通过降落伞降落回大西洋。团队将检查有效载荷，将实验结果反馈给学生。 影像来源：NASA/Danielle Johnson