2020 April 22 Planet Earth at Twilight Image Credit: ISS Expedition 2 Crew, Gateway to Astronaut Photography of Earth, NASA Explanation: No sudden, sharp boundary marks the passage of day into night in this gorgeous view of ocean and clouds over our fair planet Earth. Instead, the shadow line or ter […]
Fifty years ago, on April 22, 1970, people around the globe marked the first Earth Day. On this Earth Day, as we physically separate ourselves by necessity, we can still collectively appreciate the wondrous beauty of our planet and the extraordinary science that helps us understand how it all works
2020 April 18 Just Another Day on Aerosol Earth Model Visualization Credit: NASA Earth Observatory, GEOS FP, Joshua Stevens Explanation: It was just another day on aerosol Earth. For August 23, 2018, the identification and distribution of aerosols in the Earth’s atmosphere is shown in this dra
2020 April 7 A Path North Image Credit & Copyright: Mario Konang Explanation: What happens if you keep going north? The direction north on the Earth, the place on your horizon below the northern spin pole of the Earth — around which other stars appear to slowly swirl, will remain the same
红色火星 Credit：NASA 火星是太阳系内，距离太阳从近到远的第四颗行星。 Credit：NASA 火星有两颗卫星，分别是火卫一和火卫二，一个22.2公里，一个12.6公里。 Credit：NASA 地球的直径12742公里（7926英里），火星的直径6779公里（4220英里），月球的直径3474.2公里（2159英里）。 Credit：NASA 如果你在地球上称重100磅，那么你在火星上的重量只有38磅，想要减肥吗？去火星吧！ Credit：NASA 地球平均距离太阳的1.5亿公里（1AU），火星平均距离太阳2.29亿公里（1.5AU）。 Credit：NASA 地球环绕太阳一周36
这张照片显示了南极洲东部丹曼冰川表面的涟漪在冰面上投下阴影。与2003年至2008年相比，现在的冰川融化速度更快。 来源:NASA 根据美国国家航空航天局喷气推进实验室和加州大学欧文分校的科学家们的一项新研究，从1996年到2018年，南极洲东部的丹曼冰川退缩了3.4英里(5.4公里)。他们对丹曼冰川的分析还表明，冰盖下的地面形状特别容易受气候变化的影响而退缩。丹曼冰川是一个单一的冰川，其冰量相当于南极洲西部的一半。 直到最近，研究人员还认为，东南极洲比西南极洲更稳定，因为与在南极洲西部观察到的冰川融化相比，东南极洲失去的冰川并不多。“南极东部一直被认为是威胁较小,但随着像丹曼这样的冰川受到冰
This photograph shows ripples in the surface of Denman Glacier in East Antarctica that throw shadows against the ice. The glacier is melting at a faster rate now than it was from 2003 to 2008. The glacier retreated 3.4 miles (5.4 kilometers) from 1996 to 2018, according to a new study by scientists
NASA’s new three-dimensional portrait of methane, the world’s second-largest contributor to greenhouse warming, shows it arising from a diversity of sources on the ground and how it moves through the atmosphere. Combining multiple data sets from emissions inventories, including fossil fuel, agricult
href=”https://www.nasachina.cn/wp-content/uploads/2020/03/alligator_in_waterway.jpg”> An alligator lurks in a marshy waterway at NASA’s Kennedy Space Center in Florida. The center shares a border with the Merritt Island National Wildlife Refuge. More than 330 native and migratory b
格陵兰岛东南海岸线外的库鲁苏克岛附近冰山的鸟瞰图，该地区的冰层流失速度加快。 来源：NASA Goddard Space Flight Center 从11个监测格陵兰岛和南极冰盖的卫星任务中观察到的情况显示，这些地区的冰层融化速度比上世纪90年代快了6倍。如果目前的融化趋势继续下去，到2100年，这些地区将面临政府间气候变化专门委员会(IPCC)提出的海平面上升6.7英寸(17厘米)的“最坏情况”。 3月12日，来自50个组织的89名国际极地科学家组成的研究小组在《自然》(Nature)杂志网络版上发表了这一发现，这是迄今为止对冰盖变化最全面的评估。冰盖质量平衡比对演习小组结合26次调查，计
