保护地球，探索宇宙，发现文明
2022年2月28日 Direct Projection: The Moon in My Hands Image Credit & Copyright: Jeff Graphy Explanation: You don’t have to look through a telescope to know where it’s pointing. Allowing the telescope to project its image onto a large surface can be useful because it dilutes the intense brightness of very bright sources. Such dilution is useful ...
2021年01月22日 The Milky Ring Image Credit & Copyright: Alvin Wu Explanation: An expanse of cosmic dust, stars and nebulae along the plane of our Milky Way galaxy form a beautiful ring in this projected all-sky view. The creative panorama covers the entire galaxy visible from planet Earth, an ambitious 360 degree mosaic that took two years to complete. Nor...