永久冻土的融化会导致土地消失，如图所示，阿拉斯加德鲁角沿岸的部分海岸断崖已塌陷入海。 影像来源：本杰明·琼斯，美国地质勘探局 为了更全面地了解气候变化是如何影响地球上的冰冻地区，科学家们正在结合从空气、陆地和太空收集的数据。 被困在地球永久冻土层（至少会冻结两年的土地）中的是无数的温室气体、微生物和化学物质，包括现在被禁止的杀虫剂DDT。随着地球变暖，永久冻土正在以越来越快的速度融化，科学家们在试图确定永久冻土融化的潜在影响时面临着许多不确定性。 今年早些时候发表在《自然评论地球与环境》杂志上的一篇论文着眼于永久冻土研究的现状。除了强调关于永久冻土融化的结论外，这篇论文还关注了研究人员正在寻求 […]
The Pilbara in northwestern Australia exposes some of the oldest rocks on Earth, over 3.6 billion years old. The iron-rich rocks formed before the presence of atmospheric oxygen, and life itself. Found upon these rocks are 3.45 billion-year-old fossil stromatolites, colonies of microbial cyanobacter
The LAMP mission, short for Loss through Auroral Microburst Pulsations, launched on Saturday, Marc 5, 2022, aboard a Black Brant IX suborbital sounding rocket. The mission will study an often overlooked kind of aurora, called a pulsating aurora, and test a theory on what causes them. Like all aurora
A United Launch Alliance Atlas V 541 rocket, carrying the National Oceanic and Atmospheric Administration’s (NOAA) Geostationary Operational Environmental Satellite-T (GOES-T), soars upward after lifting off from Space Launch Complex 41 at Cape Canaveral Space Force Station in Florida on March 1, 20
2022年2月27日 Earthrise 1: Historic Image Remastered Image Credit: NASA, Apollo 8 Crew, Bill Anders; Processing and License: Jim Weigang Explanation: “Oh my God! Look at that picture over there! Here’s the Earth coming up. Wow is that pretty!” Soon after that pronouncement, 50 years a
2022年2月13日 Earth at Night Image Credit: NASA, Suomi NPP VIIRS; Data: Miguel Román (NASA GSFC); Processing: Joshua Stevens Explanation: This is what the Earth looks like at night. Can you find your favorite country or city? Surprisingly, city lights make this task quite possible. Human-made lights hi
This image from January 2022 shows the first rays of an orbital sunrise as seen from the International Space Station as it orbited 257 miles above the coast of Venezuela. As the station orbits the Earth, completing one trip around the globe every 92 minutes, the astronauts experience 15 or 16 sunris
2022年2月6日 Blue Marble Earth Image Credit: NASA, Apollo 17 Crew Explanation: Welcome to planet Earth, the third planet from a star named the Sun. The Earth is shaped like a sphere and composed mostly of rock. Over 70 percent of the Earth’s surface is water. The planet has a relatively thin atmo
二月份的天空会发生什么？ 木星退场，金星亮度达到峰值，以及隔壁的恒星形成云。 影像来源：NASA/JPL-Caltech 翻译：灼眼的粉丝 在过去的两个月里，随着土星和金星的离开，木星是二月份在我们暮色天空中剩下的唯一一颗明亮的行星，而它即将消失。这颗巨大的行星孤零零地矗立在2月日落后的西方天空中。到本月中旬，它仅比太阳晚一小时落下。一旦木星在2月底离开，在8月之前日落后的天空将基本上没有肉眼可见的行星，直到土星将在日落时分开始在东方升起。（不过，在4月和5月的一小段时间里，你可能会看到水星短暂地出现在地平线上。） 木星是二月日落后唯一肉眼可见的行星。 图片来源：NASA/JPL-Caltec
