2021年7月28日 Ring Galaxy AM 0644-741 Image Credit: NASA, ESA, Hubble, HLA; Processing: Jonathan Lodge Explanation: The rim of the large blue galaxy at the right is an immense ring-like structure 150,000 light years in diameter composed of newly formed, extremely bright, massive stars. AM 0644-741 is k […]
The Boeing CST-100 Starliner spacecraft is secured atop a United Launch Alliance Atlas V rocket at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Space Force Station in Florida on July 17, 2021. Starliner is slated to launch on July 30 on Atlas V for Boeing’s second O
This image from May 11, 1971, is a high angle view showing the Apollo 15 spacecraft on the way from the Vehicle Assembly Building to Pad A, Launch Complex 39 at the Kennedy Space Center. The Saturn V stack and its mobile launch tower are atop a huge crawler-transporter. Apollo 15 was the fourth sche
2021年7月26日 CG4: A Ruptured Cometary Globule Image Credit & Copyright: Nicolas Rolland & Martin Pugh Explanation: Can a gas cloud grab a galaxy? It’s not even close. The “claw” of this odd looking “creature” in the featured photo is a gas cloud known as a comet
天文学家首次在木星的卫星木卫三的大气中发现了水蒸气的证据。这种水蒸气是在木卫三表面的冰升华时形成的，也就是说，从固体变成气体。 科学家们利用NASA哈勃太空望远镜新的档案数据集，做出了这一发现，发表在《自然天文学》杂志上。 这张照片展示了1996年NASA哈勃太空望远镜观测到的木星卫星木卫三。木卫三位于5亿英里(超过6亿公里)之外，哈勃可以跟踪卫星上的变化，并在紫外和近红外波长揭示其他特征。天文学家现在利用哈勃望远镜提供的新的档案数据集，首次揭示了木星卫星木卫三大气中存在水蒸气的证据，这是由于水蒸气从卫星的冰面热逸出而来。 影像来源：NASA, ESA, John Spencer (SwRI
2021年7月25日 Crescent Neptune and Triton Image Credit: NASA, Voyager 2 Explanation: Gliding silently through the outer Solar System, the Voyager 2 spacecraft camera captured Neptune and Triton together in crescent phase. The elegant picture of the ice-giant planet and its cloudy moon was taken from be
一组研究人员正在使用人工智能技术校准NASA的一些太阳图像，帮助改善科学家用于太阳研究的数据。这项新技术于2021年4月13日发表在《天文学与天体物理学》杂志上。 太阳望远镜的工作很辛苦。盯着太阳要付出惨痛的代价，不断受到无休止的太阳粒子和强烈阳光的轰击。随着时间的推移，太阳望远镜的敏感镜片和传感器开始退化。为了确保这些仪器发回的数据仍然准确，科学家们定期进行重新校准，，以确保他们了解仪器的变化情况。 NASA的太阳动力学天文台（SDO）于2010年发射，十多年来一直提供太阳的高清图像。它的图像让科学家们详细观察了各种太阳现象，这些现象可能引发空间天气，并影响我们的宇航员和地球及太空中的技术。
2021年7月24日 The Edge of Space Image Credit & Copyright: Ralf Rohner Explanation: Where does space begin? For purposes of spaceflight some would say at the Karman line, currently defined as an altitude of 100 kilometers (60 miles). Others might place a line 80 kilometers (50 miles) above Earth
2021年7月23日 Elephant, Bat, and Squid Image Credit & Copyright: Patrick Hsieh Explanation: Sprawling emission nebulae IC 1396 and Sh2-129 mix glowing interstellar gas and dark dust clouds in this 10 degree wide field of view toward the northern constellation Cepheus the King. Energized by its blu
