猎鹰9号伴月

猎鹰9号伴月

ByNASA中文

2020年9月5日 A Falcon 9 Moon Image Credit & Copyright: Katie Darby Explanation: Illuminating planet Earth’s night, full moons can have many names. This year the last full moon of northern hemisphere summer was on September 2, known to some as the Full Corn Moon. A few days earlier on August 30 this almost full moon rose just before sunset though, shining through cloudy skies over Cape Canaveral Air Force Station on Florida’s Space Coast. A well-timed snapshot caught the glare of rocket engines firing below the lunar disk, a Falcon 9 rocket’s first stage successfully returning to Cape Canaveral’s landing zone 1. About 9 minutes earlier, the same SpaceX Falcon 9 rocket had launched the SAOCOM 1B satellite toward polar orbit. The fourth launch for…

未来太空发射系统飞行的助推器测试

未来太空发射系统飞行的助推器测试

ByNASA中文

The first solid rocket booster test for Space Launch System (SLS) missions beyond Artemis III is seen here during a two-minute hot fire test, Wednesday, September 2, 2020, at the T-97 Northrop Grumman test facility in Promontory, Utah. The flight support booster is structurally identical to each of the five-segment solid rocket boosters on the SLS rocket and produce more than 75 percent of the rocket’s thrust capability. The flight support booster test builds on prior tests and will allow NASA and Northrop Grumman, the SLS booster lead contractor, to evaluate the motor’s performance using potential new materials and processes for future booster performance. NASA is working to land the first woman and next man on the Moon by 2024. The SLS rocket, Orion spacecraft,…

巫师星云

巫师星云

ByNASA中文

2020年9月4日 The Wizard Nebula Image Credit & Copyright: Andrew Klinger Explanation: Open star cluster NGC 7380 is still embedded in its natal cloud of interstellar gas and dust popularly known as the Wizard Nebula. Seen on the left, with foreground and background stars along the plane of our Milky Way galaxy it lies some 8,000 light-years distant, toward the constellation Cepheus. In apparent size on the sky, a full moon would cover the 4 million year young cluster and associated nebula, normally much too faint to be seen by eye. Made with telescope and camera firmly planted on Earth, the image reveals multi light-year sized shapes and structures of cosmic gas and dust within the Wizard though, in a color palette made popular in Hubble…

火星双子峰

火星双子峰

ByNASA中文

NASA’s Mars Pathfinder mission landed on the Red Planet on July 4, 1997. It’s tiny rover, named Sojourner after abolitionist Sojourner Truth, spent 83 days of a planned seven-day mission exploring the Martian terrain, acquiring images, and taking chemical, atmospheric and other measurements. When the Mars Pathfinder spacecraft approached its destination, no NASA mission had successfully reached Mars in more than 20 years.The final data transmission received from Pathfinder was at 10:23 UTC on September 27, 1997. This image shows the Twin Peaks, which are modest-size hills to the southwest of the Mars Pathfinder landing site. They were discovered on the first panoramas taken by the IMP camera on the July 4, and subsequently identified in Viking Orbiter images taken more than 20 years before….

仙女座大星系的气晕

仙女座大星系的气晕

ByNASA中文

2020年9月3日 A Halo for Andromeda Digital Illustration Credit: NASA, ESA, J. DePasquale and E. Wheatley (STScI) and Z. Levay Explanation: M31, the Andromeda Galaxy, is the closest large spiral galaxy to our Milky Way. Some 2.5 million light-years distant it shines in Earth’s night sky as a small, faint, elongated cloud just visible to the unaided eye. Invisible to the eye though, its enormous halo of hot ionized gas is represented in purplish hues for this digital illustration of our neighboring galaxy above rocky terrain. Mapped by Hubble Space Telescope observations of the absorption of ultraviolet light against distant quasars, the extent and make-up of Andromeda’s gaseous halo has been recently determined by the AMIGA project. A reservoir of material for future star formation, Andromeda’s…

天空实验室指挥官杰里·卡尔（Jerry Carr）为完成任务而训练

天空实验室指挥官杰里·卡尔（Jerry Carr）为完成任务而训练

ByNASA中文

Skylab 4 Commander Gerald P. Carr is fully suited as he prepares to enter spacecraft 118 (the Skylab 4 vehicle) at the start of a high altitude chamber test at the Kennedy Space Center in this image from Aug. 6, 1973. Also participating in the test were scientist-astronaut Edward G. Gibson, science pilot, and astronaut William R. Pogue, pilot. The Skylab 4 spacecraft was moved to the Vehicle Assembly Building on Aug. 12, where it was mated with the launch vehicle. Carr passed away on Aug. 26, 2020. “NASA and the nation have lost a pioneer of long duration spaceflight,” said NASA Administrator Jim Bridenstine. Read the statement. See this TED-Ed animation, narrated by Carr, as he discussed his life as an astronaut. Image Credit:…

木星和卫星

木星和卫星

ByNASA中文

2020年9月2日 Jupiter and the Moons Image Credit & Copyright: Robert Fedez Explanation: How many moons do you see? Many people would say one, referring to the Earth’s Moon, prominent on the lower left. But take a closer look at the object on the upper right. That seeming-star is actually the planet Jupiter, and your closer look might reveal that it is not alone – it is surrounded by some of its largest moons. From left to right these Galilean Moons are Io, Ganymende, Europa and Callisto. These moons orbit the Jovian world just like the planets of our Solar System orbit the Sun, in a line when seen from the side. The featured single shot was captured from Cancun, Mexico last week as Luna, in…

谷神星的盐水渍

谷神星的盐水渍

ByNASA中文

2020年9月1日 Salt Water Remnants on Ceres Video Credit: Dawn Mission, NASA, JPL-Caltech, UCLA, MPS/DLR/IDA Explanation: Does Ceres have underground pockets of water? Ceres, the largest asteroid in the asteroid belt, was thought to be composed of rock and ice. At the same time, Ceres was known to have unusual bright spots on its surface. These bright spots were clearly imaged during Dawn’s exciting approach in 2015. Analyses of Dawn images and spectra indicated that the bright spots arise from the residue of highly-reflective salt water that used to exist on Ceres’ surface but evaporated. Recent analysis indicates that some of this water may have originated from deep inside Ceres, indicating Ceres to be a kindred spirit with several Solar System moons, also thought to harbor…

菲律宾海上的日出阴影

菲律宾海上的日出阴影

ByNASA中文

As the International Space Station orbited more than 200 miles above our home planet, the crew caught this glimpse of the sunrise casting long shadows over a cloudy Philippine Sea as the station orbited off the coast of the Philippines northeast of Manila. Image Credit: NASA 当国际空间站在距地球200多英里的上空飞行时，机组人员看到了日出在多云的菲律宾海面上投下长长的阴影，此时国际空间站正在菲律宾马尼拉东北的海岸上空飞行。 图片来源:美国国家航空航天局

SS 433：双星系统形成的微类星体

SS 433：双星系统形成的微类星体

ByNASA中文

2020年8月31日 SS 433: Binary Star Micro-Quasar Animation Credit: DESY, Science Communication Lab Explanation: SS 433 is one of the most exotic star systems known. Its unremarkable name stems from its inclusion in a catalog of Milky Way stars which emit radiation characteristic of atomic hydrogen. Its remarkable behavior stems from a compact object, a black hole or neutron star, which has produced an accretion disk with jets. Because the disk and jets from SS 433 resemble those surrounding supermassive black holes in the centers of distant galaxies, SS 433 is considered a micro-quasar. As illustrated in the animated featured video based on observational data, a massive, hot, normal star is locked in orbit with the compact object. As the video starts, material is shown being…