木卫三阴影中的木星

木卫三阴影中的木星

ByNASA中文

During its 40th close pass by Jupiter, our Juno spacecraft saw Ganymede cast a large, dark spot on the planet on Feb. 25, 2022. JunoCam captured this image from very close to Jupiter, making Ganymede’s shadow appear especially large. At the time the raw image was taken, the Juno spacecraft was about 44,000 miles (71,000 kilometers) above Jupiter’s cloud tops and 15 times closer to the planet than Ganymede. An observer at Jupiter’s cloud tops within the oval shadow would experience a total eclipse of the Sun. Total eclipses are more common on Jupiter than Earth for several reasons: Jupiter has four major moons (Ganymede, Io, Callisto, and Europa) that often pass between Jupiter and the Sun, and since Jupiter’s moons orbit in a plane…

木卫三的影子之下

木卫三的影子之下

ByNASA中文

2022年10月7日 In Ganymede’s Shadow Image Credit & Copyright: Andrew McCarthy Explanation: At opposition, opposite the Sun in Earth’s sky, late last month Jupiter is also approaching perihelion, the closest point to the Sun in its elliptical orbit, early next year. That makes Jupiter exceptionally close to our fair planet, currently resulting in excellent views of the Solar System’s ruling gas giant. On September 27, this sharp image of Jupiter was recorded with a small telescope from a backyard in Florence, Arizona. The stacked video frames reveal the massive world bounded by planet girdling winds. Dark belts and light zones span the gas giant, along with rotating oval storms and its signature Great Red Spot. Galilean moon Ganymede is below and right in the frame. The…

诺号的木卫二影像

诺号的木卫二影像

ByNASA中文

2022年10月3日 Jupiter’s Europa from Spacecraft Juno Image Credit & License: NASA, JPL-Caltech, SwRI, MSSS; Processing: Andrea Luck Explanation: What mysteries might be solved by peering into this crystal ball? In this case, the ball is actually a moon of Jupiter, the crystals are ice, and the moon is not only dirty but cracked beyond repair. Nevertheless, speculation is rampant that oceans exist under Europa’s fractured ice-plains that could support life. Europa, roughly the size of Earth’s Moon, is pictured here in an image taken a few days ago when the Jupiter-orbiting robotic spacecraft Juno passed within 325 kilometers of its streaked and shifting surface. Underground oceans are thought likely because Europa undergoes global flexing due to its changing gravitational attraction with Jupiter during its slightly…

窥视木星的内部生命

窥视木星的内部生命

ByNASA中文

Auroras and hazes glow in this composite image of Jupiter taken by the James Webb Space Telescope’s Near-Infrared Camera (NIRCam). NIRCam has three specialized infrared filters that showcase details of the planet. Since infrared light is invisible to the human eye, the light has been mapped onto the visible spectrum: the auroras are mapped to redder colors, hazes to yellows and greens, and light reflected from a deeper main cloud to blues. Image credit: NASA, ESA, CSA, Jupiter ERS Team; image processing by Judy Schmidt. 在这张由詹姆斯·韦伯太空望远镜的近红外相机（NIRCam）拍摄的木星合成图像中，极光和雾霾发出辉光。NIRCam有三个专门的红外滤镜，可以展示行星的细节。 由于红外光对人眼是不可见的，所以它被映射到可见光谱上：极光被映射到更红的颜色，雾霾被映射到黄色和绿色，而从较深的主云反射的光则映射为蓝色。 图片来源：NASA、ESA、CSA、Jupiter ERS Team；图像由朱迪·施密特的处理。

韦伯太空望远镜的木星影像

韦伯太空望远镜的木星影像

ByNASA中文

2022年8月30日 Jupiter from the Webb Space Telescope Image Credit: NASA, ESA, CSA, Jupiter ERS Team; Processing: Ricardo Hueso (UPV/EHU) & Judy Schmidt Explanation: This new view of Jupiter is illuminating. High-resolution infrared images of Jupiter from the new James Webb Space Telescope (Webb) reveal, for example, previously unknown differences between high-floating bright clouds — including the Great Red Spot — and low-lying dark clouds. Also clearly visible in the featured Webb image are Jupiter’s dust ring, bright auroras at the poles, and Jupiter’s moons Amalthea and Adrastea. Large volcanic moon Io’s magnetic funneling of charged particles onto Jupiter is also visible in the southern aurora. Some objects are so bright that light noticeably diffracts around Webb’s optics creating streaks. Webb, which orbits the Sun near…

近木轨道11：掠过木星

近木轨道11：掠过木星

ByNASA中文

2022年8月28日 Perijove 11: Passing Jupiter Video Credit: License: NASA, Juno, SwRI, MSSS, Gerald Eichstadt; Music: Moonlight Sonata (Ludwig van Beethoven) Explanation: Here comes Jupiter! NASA’s robotic spacecraft Juno is continuing on its highly-elongated orbits around our Solar System’s largest planet. The featured video is from perijove 11 in early 2018, the eleventh time Juno has passed near Jupiter since it arrived in mid-2016. This time-lapse, color-enhanced movie covers about four hours and morphs between 36 JunoCam images. The video begins with Jupiter rising as Juno approaches from the north. As Juno reaches its closest view — from about 3,500 kilometers over Jupiter’s cloud tops — the spacecraft captures the great planet in tremendous detail. Juno passes light zones and dark belt of clouds that circle…

旅行者1号看到了大红斑

旅行者1号看到了大红斑

ByNASA中文

Launched in 1977, the twin Voyager probes are NASA’s longest-operating mission and the only spacecraft ever to explore interstellar space. 45 years on, Voyager 1 and 2 continue to provide us with observations of the farthest reaches of space. Our Voyager 1 spacecraft zoomed toward Jupiter in January and February 1979, capturing hundreds of images of Jupiter during its approach, including this close-up of swirling clouds around Jupiter’s Great Red Spot. Learn more about Voyager: Voyager, NASA’s Longest-Lived Mission, Logs 45 Years in Space Image Credit: NASA/JPL 1977年发射的两个旅行者号探测器是NASA最长的运行任务，也是唯一探索星际空间的航天器。45年过去了，“旅行者1号”和“旅行者2号”继续为我们提供太空最远区域的观测。 我们的旅行者1号航天器于1979年1月和2月向木星飞去，在接近木星的过程中拍摄了数百张木星图像，包括这张木星大红斑周围漩涡云的特写镜头。 了解更多关于旅行者的信息：旅行者号是NASA寿命最长的任务，在太空中服役45年 图片来源：NASA/JPL