弗兰克·卢比奥打破了NASA的单次太空飞行记录

弗兰克·卢比奥打破了NASA的单次太空飞行记录

ByNASA中文

In this image from July 24, 2023, astronaut Frank Rubio completes a session on the Surface Avatar Remote Control Terminal, which investigates how haptic controls, user interfaces, and virtual reality could command and control surface-bound robots from long distances. While aboard the International Space Station, Rubio has worked on several experiments involving robotics, space physics, and biology, and he participated in three spacewalks. On Sept. 11, 2023, Rubio surpassed NASA’s single spaceflight record of 355 continuous days in space made by astronaut Mark Vande Hei on March 30, 2022. NASA TV broadcast a prerecorded space-to-ground conversation Vande Hei had with Rubio on Sept. 5, when he congratulated the orbiting astronaut for his record-breaking mission. Rubio is set to return to Earth on Sept. 27, when…

星系团Abell 370及后方的天体

星系团Abell 370及后方的天体

ByNASA中文

2023年9月12日 Galaxy Cluster Abell 370 and Beyond Image Credit: NASA, ESA, Jennifer Lotz and the HFF Team (STScI) Explanation: Some 4 billion light-years away, massive galaxy cluster Abell 370 is captured in this sharp Hubble Space Telescope snapshot. The cluster of galaxies only appears to be dominated by two giant elliptical galaxies and infested with faint arcs. In reality, the fainter, scattered bluish arcs, along with the dramatic dragon arc below and left of center, are images of galaxies that lie far beyond Abell 370. About twice as distant, their otherwise undetected light is magnified and distorted by the cluster’s enormous gravitational mass, overwhelmingly dominated by unseen dark matter. Providing a tantalizing glimpse of galaxies in the early universe, the effect is known as gravitational…

雪白的白鹭在水中搜寻

雪白的白鹭在水中搜寻

ByNASA中文

A snowy egret, identifiable by its slender black bill, black legs and yellow feet, marches through a pond near NASA’s Kennedy Space Center, looking for food in this image from March 29, 2007. This species inhabits salt marshes, ponds, rice field and shallow coastal bays from Maine to southern South America. They are also found in northern California, Texas, and Oklahoma. Kennedy shares a boundary with the Merritt Island National Wildlife Refuge, which surrounds it; more than 330 native and migratory bird species live there. Image credit: NASA/Ken Thornsley 在这张2007年3月29日拍摄的照片中，一只雪白的白鹭，从它细长的黑色喙，黑色的腿和黄色的脚可以辨认出来，它正在寻找食物。该物种栖息于从缅因州到南美南部的盐沼，池塘，稻田和浅海岸海湾。加州北部、德克萨斯州和俄克拉何马州也有它们的身影。肯尼迪与环绕着它的梅里特岛国家野生动物保护区接壤；超过330种本地和候鸟生活在那里。 图片来源：NASA/Ken Thornsley

靓丽的西村彗星

靓丽的西村彗星

ByNASA中文

2023年9月11日 Beautiful Comet Nishimura Credit & Copyright: Petr Horálek / Institute of Physics in Opava Explanation: This scene would be beautiful even without the comet. By itself, the sunrise sky is an elegant deep blue on high, with faint white stars peeking through, while near the horizon is a pleasing tan. By itself, the foreground hills of eastern Slovakia are appealingly green, with the Zadňa hura and Veľká hora hills in the distance, and with the lights of small towns along the way. Venus, by itself on the right, appears unusually exquisite, surrounded by a colorful atmospheric corona. But what attracts the eye most is the comet. On the left, in this composite image taken just before dawn yesterday morning, is Comet Nishimura. On recent…

美国新墨西哥州上空的日环食

美国新墨西哥州上空的日环食

ByNASA中文

2023年9月10日 An Annular Solar Eclipse over New Mexico Credit & Copyright: Colleen Pinski Explanation: What is this person doing? In 2012, an annular eclipse of the Sun was visible over a narrow path that crossed the northern Pacific Ocean and several western US states. In an annular solar eclipse, the Moon is too far from the Earth to block out the entire Sun, leaving the Sun peeking out over the Moon’s disk in a ring of fire. To capture this unusual solar event, an industrious photographer drove from Arizona to New Mexico to find just the right vista. After setting up and just as the eclipsed Sun was setting over a ridge about 0.5 kilometers away, a person unknowingly walked right into the shot. Although…

西村彗星

西村彗星

ByNASA中文

2023年9月9日 Comet Nishimura Grows Credit & Copyright: Peter Kennett Explanation: Comet Nishimura is growing. More precisely, the tails C/2023 P1 (Nishimura) are growing as it nears the Sun. Discovered only last month, the comet is already near naked eye brightness as it now moves inside the Earth’s orbit. The comet will be nearest the Earth next week, but nearest the Sun the week after — on September 17. Speculation holds that expelled ice and dust from Comet Nishimura‘s last visit to the inner Solar System may have created the Sigma Hydrids meteor shower which peaks yearly in December. If so, then this meteor shower may become more active, refreshed with new comet debris. Pictured, Comet Nishimura was captured from Edgewood, New Mexico, USA four nights…

以下是9月24日小行星样本运送的工作方式

以下是9月24日小行星样本运送的工作方式

ByNASA中文

9月24日周日清晨，OSIRIS-REx航天器的样本舱将自2016年发射以来首次与地球大气层面对面接触。航天器上估计有8.8盎司（250克）的岩石物质，这些物质是2020年从贝努表面收集，这是NASA的第一个小行星样本，也是迄今为止在太空中收集的最大的小行星样本。 当OSIRIS-REx航天器接近地球时，它不会因为样本释放而减速。相反，当它到达地球表面以上63,000英里（或102,000公里）时——大约是地球到月球距离的三分之一——地面操作人员发出的一条信息将触发太空舱的释放，太空舱将被送入下方的大气层。释放太空舱20分钟后，航天器将启动其推进器，绕过地球，转向小行星阿波菲斯，在那里它将以一个新的名字——OSIRIS-APEX （OSIRIS-Apophis Explorer），继续研究我们的太阳系。 与此同时，太空舱在穿越太空四个小时后，将于美国山区夏令时间上午8点42分（美国东部时间上午10点42分）穿透地球大气层，速度约为27，650英里/小时(44，500公里/小时)。以这种速度，地球大气的压缩将产生足够的能量将太空舱包裹在一个过热的火球中。隔热罩将有助于调节太空舱内的温度，使样品在与贝努表面相似的温度下保持安全。 降落伞将使太空舱下降到安全的着陆速度。大约在太空舱进入大气层后2分钟，设计用于稳定过渡到亚音速的锥状降落伞将首先展开。六分钟后，在沙漠上空约1英里（1.6公里）处，主降落伞将展开，将太空舱运送到军事靶场上36英里×8.5英里（58公里×14公里）的区域。在着陆时，太空舱将减速到大约11英里/小时（18公里/小时）。 最后，就在进入大气层13分钟后，太空舱将在7年内首次回到地球，等待回收团队的到来。 这张图显示了OSIRIS-REx航天器释放其样本舱到降落在犹他州沙漠之间发生的事件。 影像来源：洛克希德·马丁公司。 大约在返回舱着陆前20分钟，也就是返回舱仍在地球大气层之上时，回收现场团队将登上四架直升机，前往沙漠。热仪器将跟踪太空舱热信号的红外线，直到光学仪器可以看到太空舱，这给了回收团队一种追踪太空舱地球路径的方法。回收团队的目标是尽快从地面回收太空舱，以避免样品受到地球环境的污染。 一旦确定返回舱的位置并进行包装以备旅行，太空舱将通过直升机长绳运送到军事射程上的临时无尘室，进行初步处理和拆解，以便准备将其通过飞机送往NASA位于休斯顿的约翰逊航天中心。在那里，样本将被记录、保管并分发给全球科学家进行分析。 参考来源： https://blogs.nasa.gov/osiris-rex/2023/09/08/heres-how-sept-24-asteroid-sample-delivery-will-work/

打开舱门：载人6号溅落

打开舱门：载人6号溅落

ByNASA中文

Support teams onboard the SpaceX recovery ship MEGAN work to open the hatch of the SpaceX Dragon Endeavour spacecraft shortly after it landed in the Atlantic Ocean on Sept. 4, 2023, with NASA astronauts Stephen Bowen and Woody Hoburg, United Arab Emirates (UAE) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev aboard. Bowen, Hoburg, Alneyadi, and Fedyaev are returning after nearly six months in space aboard the International Space Station. This was the first spaceflight for all members except Bowen. During this expedition, Hoburg completed his first spacewalk, Alneyadi became the first UAE astronaut to conduct a spacewalk, and Bowen tied the record for most spacewalks by a U.S. astronaut, also held by Mike Lopez-Alegria, Bob Behnken, Peggy Whitson, and Chris Cassidy. Watch the crew…

恒星工厂M17

恒星工厂M17

ByNASA中文

2023年9月8日 Star Factory Messier 17 Image Credit & Copyright: Kim Quick, Terry Hancock, and Tom Masterson (Grand Mesa Observatory) Explanation: Sculpted by stellar winds and radiation, the star factory known as Messier 17 lies some 5,500 light-years away in the nebula-rich constellation Sagittarius. At that distance, this 1/3 degree wide field of view spans over 30 light-years. The sharp composite, color image highlights faint details of the region’s gas and dust clouds against a backdrop of central Milky Way stars. Stellar winds and energetic light from hot, massive stars formed from M17’s stock of cosmic gas and dust have slowly carved away at the remaining interstellar material, producing the cavernous appearance and undulating shapes. M17 is also known as the Omega Nebula or the Swan…