保护地球，探索宇宙，发现文明
2022年6月25日 Planets of the Solar System Image Credit & Copyright: Antonio Canaveras, Chiara Tronci, Giovanni Esposito, Giuseppe Conzo, Luciana Guariglia, (Gruppo Astrofili Palidoro) Explanation: Simultaneous images from four cameras were combined to construct this atmospheric predawn skyscape. The cooperative astro-panorama captures all the planets of th...
2022年6月24日 Filaprom on the Western Limb Image Credit & Copyright: Martin Wise Explanation: A solar filament is an enormous stream of incandescent plasma suspended above the active surface of the Sun by looping magnetic fields. Seen against the solar disk it looks dark only because it’s a little cooler, and so slightly dimmer, than the solar photos...
After completing two additional mirror alignment steps in March 2022, the team confirmed the James Webb Space Telescope’s optical performance will be able to meet or exceed the science goals the observatory was built to achieve. This “selfie” was created using a specialized pupil imaging lens inside of Webb’s Near Infrared Camera, or NIRCam, instrument...
2022年6月23日 Spiral Galaxy NGC 6744 Image Credit & Copyright: Basudeb Chakrabarti Explanation: Beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across, larger than our own Milky Way. It lies some 30 million light-years distant in the southern constellation Pavo but appears as only a faint, extended object in small telescopes. We see the disk...
The Hubble Space Telescope captured this glittering scene using its Wide Field Camera 3 and Advanced Camera for Surveys. Globular clusters are stable, tightly bound groups of tens of thousands to millions of stars. As this image demonstrates, the hearts of globular clusters are densely packed with stars. Terzan 9 is dotted with so many glittering stars that ...
2022年5月2日，即该任务的第3462个火星日，NASA的好奇号火星车使用其桅杆摄像机（简称Mastcam）拍摄到了这张硫酸盐沉积区域的照片。在中心附近看到的黑色巨石被认为是由古代溪流或池塘中沉积的沙子所形成。 影像来源：NASA/JPL-Caltech/MSSS 火星车记录下的惊人的岩层提供了火星远古时期干燥气候的证据。 在过去的一年里，NASA的好奇号火车一直在穿越一个过渡区，从一个富含粘土的区域过渡到一个富含盐分的硫酸盐矿物的区域。虽然科学团队瞄准了富含粘土的区域和富含硫酸盐的区域，以提供火星过去有水的证据，但事实证明，过渡区在科学上也很吸引人。事实上，这种转变可能提供了数十亿年前火星气候发生重大变化的记录，而科学家们才刚刚开始了解这一点。 粘土矿物形成于湖泊和溪流曾经在盖尔陨石坑中泛起涟漪，沉积物沉积...
2022年6月22日 Supernova Remnant: The Veil Nebula Image Credit & Copyright: Craig Stocks (Utah Desert Remote Observatories) Explanation: Ten thousand years ago, before the dawn of recorded human history, a new light would have suddenly have appeared in the night sky and faded after a few weeks. Today we know this light was from a supernova, or exploding sta...
Attendees try on Oculus headsets and experience the International Space Station using virtual reality prior to a special screening of the NASA-produced documentary “The Color of Space” at Howard University’s Cramton Auditorium in Washington, Saturday, June 18, 2022. Officially premiering for the public on Juneteenth, the federal holiday commemorating the end...
NASA的洞察号火星车于2022年4月24日（该任务的第1211个火星日）进行了最后一次自拍。与2018年12月着陆后不久拍摄的第一张自拍相比，现在火星车上的灰尘要多得多，也比2019年3月和4月拍摄的第二张自拍中的灰尘要多。 影像来源：NASA/JPL-Caltech 该任务团队选择了比原先计划更长的时间来操作地震仪，尽管这样一来，火星车会更快地耗尽电力。 随着NASA洞察号火星车可用电力日益减少，该航天器的团队修改了任务时间表，以最大限度地发挥他们所能进行的科学研究。该火星车预计将在6月底前自动关闭地震仪（洞察号t的最后一台运行科学仪器），以节约能源，依靠布满灰尘的太阳能电池板产生的电量维持到12月左右。 相反，该团队现在计划对着陆器进行编程，以便地震仪可以运行更长时间，可能会一直持续到8月底或9月初。这样...
2022年6月21日 Analemma over Taipei Image Credit & Copyright: Meiying Lee Explanation: Does the Sun return to the same spot on the sky every day? No. A better and more visual answer to that question is an analemma, a composite of images taken at the same time and from the same place over the course of a year. The featured analemma was compiled at 4:30 pm ma...