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 […]
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 s
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
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. Tod
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 pub
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
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
2022年6月20日 Rock Fingers on Mars Image Credit: NASA, JPL-Caltech, MSSS Explanation: There, just right of center, what is that? The surface of Mars keeps revealing new surprises with the recent discovery of finger-like rock spires. The small nearly-vertical rock outcrops were imaged last month by the
The issue of General Order No. 3 by Union troops on June 19, 1865, marked the official end of slavery in Texas and the U.S. On that Monday, enslaved African Americans in Texas learned of their freedom. That day of liberation became known as Juneteenth, when the Emancipation Proclamation was announce
2022年6月19日 Game: Super Planet Crash Game Credit & License: Stefano Meschiari (U. Texas at Austin) & the SAVE/Point Team Explanation: Can you create a planetary system that lasts for 1000 years? Super Planet Crash, the featured game, allows you to try. To create up to ten planets, just clic
