保护地球，探索宇宙，发现文明
European Space Agency astronaut Samatha Cristoforetti captured a photo of a portion of China’s Tanggula Mountains near Hala Lake as the International Space Station orbited 260 miles above the Earth on Sept. 5, 2022. Since the station began hosting human astronauts in November 2000, crew members have produced hundreds of thousands of images of the land,...
On Sept. 12, 1962, President Kennedy spoke before a crowd of 35,000 people at Rice University in Houston. During his speech, the President recommitted the nation to the Moon landing goal he proposed to Congress in May 1961, rallying the nation to land astronauts on the Moon before the end of the decade and bring the crew safely back to Earth. We will provide...
This nighttime photograph from the International Space Station (ISS) as it orbited 261 miles above Earth looks across the Mediterranean Sea from north Africa to southern Europe. The city lights of Algiers, Algeria to Tunis, Tunisia highlight Africa’s northern coast from the bottom center toward the upper right. From far left, the lights of city-state M...
大自然喜欢螺旋——从飓风的漩涡，到围绕新生恒星的风车状原行星盘，再到我们宇宙中广阔的螺旋星系领域。 现在天文学家们困惑地发现，在银河系的卫星星系小麦哲伦星云中，年轻的恒星正在螺旋状地进入一个巨大星团的中心。 在这个巨大、形状奇特的恒星托儿所NGC346中，螺旋的外臂可能正在以一种类似河流的气体和恒星运动来孕育恒星的形成。研究人员说，这是一种促进恒星诞生的有效方法。 位于小麦哲伦星云中的大质量星团NGC 346，以其不同寻常的形状长期吸引着天文学家。现在，研究人员使用两种不同的方法确定，这种形状部分是由于恒星和气体以类似河流的运动螺旋进入这个星团的中心。叠加在NGC 346上的红色螺旋描绘了恒星和气体向中心移动的轨迹。科学家表示，这种螺旋运动是从外部向星团中心推进恒星形成的最有效方式。 影像来源：Illustra...
The Voyager mission was designed to take advantage of a rare geometric arrangement of the outer planets in the late 1970s and the 1980s which allowed for a four-planet tour with a minimum of propellant and trip time. This layout of Jupiter, Saturn, Uranus and Neptune, which occurs about every 175 years, allows a spacecraft on a particular flight path to swin...
在这张横跨340光年的拼接图像中，韦伯的近红外相机（NIRCam）以全新的视角展示了狼蛛星云的恒星形成区域，其中包括数以万计从未见过的年轻恒星，这些恒星以前被宇宙尘埃笼罩。最活跃的区域似乎闪烁着巨大的年轻恒星，呈淡蓝色。 影像来源：NASA, ESA, CSA, STScI, Webb ERO Production Team 很久以前，一个宇宙创造的故事展开了：数千颗从未见过的年轻恒星被发现在一个名为剑鱼座30号星云的恒星孕育区，由NASA的詹姆斯·韦伯太空望远镜拍摄。在之前的望远镜图像中，狼蛛星云因其图像中出现的尘埃细丝而被昵称为狼蛛星云，长期以来，该星云一直是研究恒星形成的天文学家的最爱。除了年轻的恒星，韦伯还揭示了遥远的背景星系，以及星云气体和尘埃的详细结构和组成。 狼蛛星云位于大麦哲伦星云星系中，距离我...
Three impact craters are displayed in this three-dimensional perspective view of the surface of Venus taken by NASA’s Magellan, the first deep space probe launched by a space shuttle. The center of the image is located at approximately 27 degrees south latitude, 339 degrees east longitude in the northwestern portion of the Lavinia Planitia region of Ve...
A little-studied star, TYC 3203-450-1, upstages a galaxy in this Hubble Telescope image from December 2017. Both the star and the galaxy are within the Lizard constellation, Lacerta. However, the star is much closer than the much more distant galaxy. Astronomers studying distant objects call these stars “foreground stars” and they are often not very happy ab...
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 co...
NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen atop the mobile launcher at Launch Pad 39B, Monday, Aug. 29, 2022, as the Artemis I launch teams loaded more than 700,000 gallons of cryogenic propellants including liquid hydrogen and liquid oxygen. The Artemis I flight test is the first integrated test of our deep space explor...