分类: NASA·每日一图

宇航员马克·凡德·黑在空间站接受眼睛检查

NASA astronaut Mark Vande Hei peers into near-infrared medical-imaging gear, or optical coherence tomography, for detailed views of his retina as part of regularly scheduled eye checks aboard the International Space Station. Astronauts periodically check their eyes because of a phenomenon known as Space-Associated Neuro-Ocular Syndrome (SANS). Symptoms inclu...

在空中和海上研究海洋涡流

Using scientific instruments aboard a self-propelled ocean glider and several airplanes, this first deployment of the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) mission will deploy its suite of water- and air-borne instruments to ensure that they work together to show what’s happening just below the ocean’s surface. The full-fledged field campaign will...

大气科学家龚杰

As an atmospheric scientist, Jie Gong explores ice clouds and other frozen precipitation like snow, floating snow (which is snow in the atmosphere that does not hit the ground) and graupel, or hail. “I work on developing methods to best use satellite data to understand the microphysics of all frozen water particles in the atmosphere called frozen hydro...

研究城市空中交通

In this March 2021 image, Flight Research Inc.’s Bell OH-58C Kiowa helicopter hovered over a helipad after completing an urban air mobility (UAM) approach at NASA’s Armstrong Flight Research Center. The Advanced Air Mobility National Campaign used the helicopter as a representative vehicle to better understand how a future UAM vehicle will need to operate in...

哈勃发现宇宙云的银色光芒

This image taken with the NASA/ESA Hubble Space Telescope showcases the emission nebula NGC 2313. Emission nebulae are bright, diffuse clouds of ionized gas that emit their own light. The bright star V565 (center of the image) highlights a silvery, fan-shaped veil of gas and dust, while the right half of this image is obscured by a dense cloud of dust. Nebul...

NASA X-59发动机进气口的视图

NASA’s X-59 requires the use of creative and strategic supersonic technologies to control and soften the jarring sound that hits the ground as the aircraft flies faster than the speed of sound. One of these creative technologies is the placement of the X-59 engine inlet. This visual is a closeup looking downstream inside of the X-59’s engine inlet where, lat...

系统工程师艾伦·陈

Perseverance entry, descent, and landing lead Allen Chen gives remarks during a NASA Perseverance rover mission landing update Feb. 17, 2021, at NASA’s Jet Propulsion Laboratory. The Perseverance Mars rover landed on Mars Feb. 18, 2021. A key objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbi...

OSIRIS-REx告别小行星贝努

On April 9, 2021, NASA’s Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx) spacecraft took one last look at Bennu, the asteroid from which it scooped up a sample last October. Slated for return to Earth in 2023, the mission is on track to deliver a sample of pristine material left over from the formatio...

观察早期宇宙中的恒星

This June 2020 image from the Hubble Space Telescope shows the galaxy cluster MACS J0416. This is one of six galaxy clusters being studied by the Hubble Frontier Fields program, which produced the deepest images of gravitational lensing ever made. Scientists used intracluster light (visible in blue) to study the distribution of dark matter within the cluster...

哈勃凝视着充满宇宙线索的星团

This detailed image features Abell 3827, a galaxy cluster that offers a wealth of exciting possibilities for study. Hubble observed it in order to study dark matter, which is one of the greatest puzzles cosmologists face today. The science team used Hubble’s Advanced Camera for Surveys and Wide Field Camera 3 to complete their observations. The two cameras h...