保护地球，探索宇宙，发现文明
2021年10月31日 Dark Matter in a Simulated Universe Illustration Credit & Copyright: Tom Abel & Ralf Kaehler (KIPAC, SLAC), AMNH Explanation: Is our universe haunted? It might look that way on this dark matter map. The gravity of unseen dark matter is the leading explanation for why galaxies rotate so fast, why galaxies orbit clusters so fast, why grav...
2021年10月30日 A Rorschach Aurora Image Credit & Copyright: Göran Strand Explanation: If you see this as a monster’s face, don’t panic. It’s only pareidolia, often experienced as the tendency to see faces in patterns of light and shadow. In fact, the startling visual scene is actually a 180 degree panorama of Northern Lights, digitally mi...
In this 90-second exposure, a SpaceX Falcon 9 rocket with the company’s Crew Dragon spacecraft onboard is seen as it is rolled out to the launch pad at Launch Complex 39A as preparations continued for the Crew-3 mission, Wednesday, Oct. 27, 2021, at NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-3 mission is the third crew rotation mission ...
2021年10月29日 Haunting the Cepheus Flare Image Credit & Copyright: Leo Shatz Explanation: Spooky shapes seem to haunt this dusty expanse, drifting through the night in the royal constellation Cepheus. Of course, the shapes are cosmic dust clouds visible in dimly reflected starlight. Far from your own neighborhood, they lurk above the plane of the Milky Wa...
木星的带状外观是由云层形成的“天气层”造成的。这张合成图像分别显示了双子座北方望远镜和美国宇航局哈勃太空望远镜拍摄的木星红外和可见光（从左到右）视图。 影像来源：International Gemini Observatory/NOIRLab/NSF/AURA/NASA/ESA, M.H. Wong and I. de Pater (UC Berkeley) et al. 美国国家航空航天局（NASA）环绕木星运行的朱诺号探测器的新发现，为这颗行星独特而多彩的大气特征提供了一个更全面的画面，为了解其云层下不为人知的过程提供了线索。这些结果突出了木星周围的云带和云带的内部工作，以及它的极地气旋，甚至是大红斑。 研究人员今天在《科学》和《地球物理研究杂志：行星》上发表了几篇关于朱诺号大气发现的论文。其他论文发表在最...
In the depths of the universe, the cores of two collapsed stars violently merge to release a burst of the deadliest and most powerful form of light, known as gamma rays. These beams of doom are unleashed upon their unfortunate surroundings, shining a million trillion times brighter than the Sun for up to 30 terrifying seconds. No spaceship will shield you fr...
2021年10月28日 Mirach’s Ghost Image Credit & Copyright: John Chumack Explanation: As far as ghosts go, Mirach’s Ghost isn’t really that scary. Mirach’s Ghost is just a faint, fuzzy galaxy, well known to astronomers, that happens to be seen nearly along the line-of-sight to Mirach, a bright star. Centered in this star field, Mirach i...
On Oct. 8, 2014, active regions on our Sun gave it the appearance of a jack-o’-lantern. This image is a blend of 171 and 193 angstrom light as captured by the Solar Dynamics Observatory. 2014年10月8日，太阳的活跃区域让它看起来像一个南瓜灯。这张照片是由太阳动力学天文台捕捉到的171埃和193埃的光混合而成。 Image Credit: NASA/GSFC/SDO 图片来源：NASA/GSFC/SDO
In June 2021, NASA received its first sample of asteroid Ryugu, which was returned to Earth in December 2020 by the Japan Aerospace Exploration Agency’s (JAXA) Hayabusa2 spacecraft. This is one of the first samples to leave Japan for preliminary investigation. As deputy leader of the mineralogy-petrology subteam for the preliminary analysis effort, Mike Zole...
2021年10月27日 NGC 6995: The Bat Nebula Image Credit & Copyright: Howard Trottier Explanation: Do you see the bat? It haunts this cosmic close-up of the eastern Veil Nebula. The Veil Nebula itself is a large supernova remnant, the expanding debris cloud from the death explosion of a massive star. While the Veil is roughly circular in shape and covers nearl...