NASA·每日一图

In this image from June 2002, astronaut Franklin R. Chang-Diaz works with a grapple fixture during a spacewalk on the STS-111 mission to perform work on the International Space Station. The first spacewalk of the mission began with the installation of a power and data Grapple fixture (PDGF) for the station’s robotic arm on the complex’s P6 truss. The PDGF will allow the robotic arm to grip the P6 truss for future station assembly operations. Astronauts Chang-Diaz and Philippe Perrin (with French Space Agency, CNES) went on to install the new fixture about halfway up the P6 truss, the vertical structure that currently supports the station’s set of large U.S. solar arrays. Chang-Diaz is Hispanic of Costa Rican descent. He is also a veteran of…

At 10:23 a.m. EDT Sept. 12, 1992, Mae Jemison, the first black woman in space, launched aboard Space Shuttle Endeavour for the STS-47 mission. In this image, she had just completed participating in crew egress training for the mission during the Terminal Countdown Demonstration Test. Jemison and Sharon McDougle, then a spacesuit technician, walk away from the orbiter at the end of the crew training. Image Credit: Sharon McDougle 1992年9月12日美国东部时间上午10点23分，第一位进入太空的黑人女性梅·杰米森登上奋进号航天飞机执行STS-47任务。在这张图片中，她刚刚完成了在终端倒计时演示测试期间为执行任务参加的乘员疏散训练。杰米森和当时的太空服技师莎伦·麦克杜格尔(Sharon McDougle)在训练结束后离开了轨道飞行器。 图片来源:Sharon McDougle

This 2019 photo of Manhattan, taken by astronaut Nick Hague from aboard the International Space Station, shows Manhattan as it looks today, 18 years after the attacks of Sept. 11, 2001. NASA remembers the anniversary in images and looks to the future as we continue to explore space. Image Credit: NASA 这张2019年曼哈顿的照片是由宇航员尼克·黑格(Nick Hague)在国际空间站(International Space Station)上拍摄的，展示了2001年9月11日恐怖袭击18年后的今天的曼哈顿。美国宇航局通过图片纪念了这一周年纪念日，并展望了未来，我们将继续探索太空。 图片来源:NASA

It’s Back to School Week and NASA has STEM activities to keep students motivated. In this image, students use real data from NASA’s GRACE satellites to track water mass changes in the U.S. Student activities include estimating water resources using heat-map data, creating a line graph for a specific location, then assessing trends and discuss implications. Learn more about STEM at NASA. Image Credit: LoriAnn Pawlik 又到学校周了，NASA开展了STEM活动，以保持学生的积极性。在这幅图中，学生们使用来自NASA GRACE卫星的真实数据来跟踪美国水域质量的变化。学生们的活动包括:利用热图数据估算水资源，为特定地点绘制线形图，然后评估趋势并讨论影响。 在NASA了解更多关于STEM的知识。 图片来源:LoriAnn Pawlik

NASA astronaut Mike Fincke, a veteran of two stays aboard the International Space Station and Space Shuttle mission STS-134, works through a check list inside a mockup of Boeing’s CST-100 Starliner during a simulation at NASA’s Johnson Space Center on Aug. 21, 2019. Fincke, along with NASA astronaut Nicole Mann and Boeing astronaut Chris Ferguson, will launch to the Space Station aboard the Starliner during its first crewed flight test. Starliner will launch as part of NASA’s Commercial Crew Program, which is working with the American aerospace industry to develop and operate a new generation of spacecraft and launch systems capable of carrying crews to low-Earth orbit and the Space Station. Commercial transportation to and from the station will provide expanded utility, additional research time…

In late August 2019, scientists from NASA’s upcoming Mars 2020 mission joined their counterparts from the joint European-Russian ExoMars mission in an expedition to the Australian Outback, one of the most remote, arid regions on the planet. Both teams came to hone their research techniques before their missions launch to the Red Planet next summer in search of signs of past life on Mars. The researchers know that any proof of past life on Mars will more than likely be almost microscopic in size. That’s where the Pilbara region of North West Australia comes in. According to Mars 2020 project scientist Ken Farley: “The Pilbara Outback is home to the oldest confirmed fossilized lifeforms on Earth, called stromatolites. If we can better understand how these…

Located in the northern constellation of Ursa Major, which also includes the Big Dipper, nearby galaxy Messier 81 is easily visible through binoculars or a small telescope. M81 is located at a distance of 12 million light-years. M81 was one of the first publicly released datasets soon after the launch of the Spitzer Space Telescope in August 2003. On the occasion of Spitzer’s 16th anniversary this new image revisits this iconic object with extended observations and improved processing. This Spitzer infrared image is a composite mosaic combining data from the Infrared Array Camera (IRAC) at wavelengths of 3.6/4.5 microns (blue/cyan) and 8 microns (green) with data from the Multiband Imaging Photometer (MIPS) at 24 microns (red). The 3.6-micron near-infrared data (blue) traces the distribution of…