NASA·每日一图

The crew aboard the International Space Station spotted Hurricane Genevieve off Mexico’s Pacific coast on Aug. 19, 2020. NASA’s Suomi NPP satellite also kept an eye on Hurricane Genevieve overnight and provided infrared imagery to forecasters who were monitoring the storm’s strength, structure and size. Because Genevieve is close to the coast of western Mexico, warnings and watches were still in effect. Image Credit: NASA 2020年8月19日，国际空间站上的宇航员在墨西哥太平洋沿岸发现了吉恩维芙飓风。 NASA的Suomi NPP卫星也在夜间密切关注吉恩维芙飓风，并向监视风暴强度，结构和大小的预报员提供了红外图像。由于吉纳维芙飓风靠近墨西哥西部海岸，因此警告和监视仍然有效。 影像来源：NASA

We’re celebrating National Aviation Day! After all, we are the National Aeronautics and Space Administration. Aviation and aeronautics are as much a part of our mission as space travel. This visualization is generated from a supercomputer simulation of the X-57 “Maxwell” electric experimental aircraft. Just as electric cars are becoming more and more commonplace on our roads each day, aerospace engineers are seeking to make electric air transportation a reality. In pursuit of that goal, NASA is developing its first crewed X-plane in more than 20 years. Compared with conventional aircraft, the X-57 team has set a goal of using five times less energy and – if powered by electricity generated from renewable sources – producing zero inflight carbon emissions. The X-57’s unique propulsion system,…

Eleven years after the launch of the first H-II Transfer cargo vehicle (HTV) to the International Space Station, the Japan Aerospace Exploration Agency’s (JAXA’s) HTV-9 will depart the orbital laboratory Tuesday, Aug. 18. This will be the final station departure of JAXA’s Kounotori, or “white stork,” model cargo craft, nine of which have delivered more than 40 tons of supplies to space station crews. JAXA is developing a new fleet of HTV cargo craft, the HTV-X, which is targeted for its first launch in 2022. In this image, the versatile Canadarm2 robotic arm is poised to grapple and remove the HTV-9 resupply craft from the Harmony module. Station Commander and NASA astronaut Chris Cassidy will command the Canadarm2 to release the HTV-9. The HTV-9 arrived…

Hi-RISE, the High-Resolution Imaging Science Experiment camera aboard NASA’s Mars Reconnaissance Orbiter (MRO) captured this avalanche plunging down a 1,640-foot-tall (500-meter-tall) cliff on May 29, 2019. The image also reveals layers at Mars’ north pole during spring. As temperatures increase and vaporize ice, the destabilized ice blocks break loose and kick up dust. Learn more as we mark the 15th anniversary since the launch of MRO, one of the oldest spacecraft at the Red Planet, which has provided glimpses of dust devils, avalanches, and more. Image Credit: NASA/JPL-Caltech/University of Arizona 2019年5月29日，美国宇航局火星勘测轨道飞行器(MRO)上的高分辨率成像科学实验摄像机拍摄了从一个1640英尺(500米)高的悬崖俯冲下来的雪崩。这张照片还显示了火星北极春季的地层。随着温度的升高和冰的蒸发，不稳定的冰块会破裂，扬起灰尘。 了解更多我们纪念MRO发射15周年的信息，MRO是这颗红色星球上最古老的航天器之一，它提供了尘暴、雪崩等的更多信息。 影像来源：NASA/JPL-Caltech/University of Arizona

We all have to do our housekeeping chores, even when we command the crew aboard the International Space Station. This past weekend, NASA astronaut and Expedition 63 Commander Chris Cassidy was no exception as he collected trash for disposal during weekend housekeeping activities. Image Credit: NASA 所有人都要做家务，甚至当我们在国际空间站指挥宇航员的时候。在过去的这个周末，NASA的宇航员兼第63号远征军指挥官克里斯·卡西迪（Chris Cassidy）也不例外，他在周末的家政活动中收集垃圾进行处理。 影像来源：NASA

Technicians at NASA’s Kennedy Space Center in Florida are working to install an adapter that will connect the Orion spacecraft to its rocket for the Artemis I mission around the Moon. This is one of the final major hardware operations for Orion inside the Neil Armstrong Operations and Checkout Building prior to integration with the Space Launch System (SLS) rocket. The spacecraft adapter cone (seen at the bottom of the stack pictured above) connects to the bottom of Orion’s service module and will later join another adapter connected to the top of the rocket’s interim cryogenic propulsion stage (ICPS). During the process to install the cone on Orion, the spacecraft is lifted out of the Final Assembly and Systems Testing, or FAST, cell and placed…

If humans could travel to this giant planet, we would see a world still glowing from the heat of its formation with a color reminiscent of a dark cherry blossom, a dull magenta. Using infrared data from the Subaru Telescope in Hawaii, astronomers discovered this gas giant orbiting a bright star named GJ 504 in 2013. Several times the mass of Jupiter and similar in size, the new world, dubbed GJ 504b, is the lowest-mass planet ever detected around a star like the sun using direct imaging techniques. GJ 504b is about four times more massive than Jupiter and has an effective temperature of about 460 degrees Fahrenheit (237 Celsius). It orbits the G0-type star GJ 504, which is slightly hotter than the Sun and…

The barred spiral galaxy known as NGC 4907 shows its starry face from 270 million light-years away to anyone who can see it from the Northern Hemisphere. This is a new image from the NASA/ESA Hubble Space Telescope of the face-on galaxy, displaying its beautiful spiral arms, wound loosely around its central bright bar of stars. Shining brightly below the galaxy is a star that is actually within our own Milky Way galaxy. This star appears much brighter than the billions of stars in NGC 4907 as it is 100,000 times closer, residing only 2,500 light-years away. NGC 4907 is also part of the Coma Cluster, a group of over 1,000 galaxies, some of which can be seen around NGC 4907 in this image. This…

This long-exposure photograph captures a starry sky above the Earth’s atmospheric glow as the International Space Station orbited above the Indian Ocean about halfway between South Africa and Australia. Image Credit: NASA 当国际空间站在南非和澳大利亚之间的印度洋上空绕轨道运行时，她的长曝光照片捕捉到了地球大气辉光上方繁星点点的星空。 影像来源：NASA