保护地球，探索宇宙，发现文明
On August 13, 2019, NASA at the Trident Basin in Cape Canaveral, Florida, astronauts Doug Hurley, left, and Bob Behnken work with teams from NASA and SpaceX to rehearse crew extraction from SpaceX’s Crew Dragon, which will be used to carry humans to the International Space Station. Using the ship Go Searcher to recover their spacecraft after splashdown and a...
2019 August 16 The Elephant’s Trunk Nebula in Cepheus Image Credit & Copyright: Chuck Ayoub Explanation: Like an illustration in a galactic Just So Story, the Elephant’s Trunk Nebula winds through the emission nebula and young star cluster complex IC 1396, in the high and far off constellation of Cepheus. Also known as vdB 142, the cosmic ele...
2019 August 15 The Perseids and the Plough Image Credit & Copyright: Jeff Dai (TWAN) Explanation: Despite interfering moonlight, many denizens of planet Earth were able to watch this year’s Perseid meteor shower. This pastoral scene includes local skygazers admiring the shower’s brief, heavenly flashes in predawn hours near peak activity on A...
Standing among dead black spruce trees in a burned area near Delta Junction, Richard Chen, a graduate student at University of Southern California, dug soil sampling pits throughout the burned area to sample for organic carbon content of the soil, measure the depth-to-permafrost, and to make electronic measurements of soil moisture for NASA’s Arctic-Boreal V...
图中是美国国家航空航天局（NASA）的“奥西里斯王号小行星探测器”（OSIRIS-REx）任务在小行星本努（Bennu）上选择的四个候选样本采集点。“夜莺”（Nightingale，左上）点位于Bennu的北半球。“翠鸟”（Kingfisher，右上）点和“鹗”（Osprey，左下）点位于Bennu的赤道地区。“鹬”（Sandpiper ，右下角）点位于Bennu的南半球。这其中一个地点将在12月被选为OSIRIS-REx的着陆地点。 版权：NASA/亚利桑那大学（University of Arizona） 在几个月期间一直努力克服小行星Bennu表面崎岖的现实后，NASA第一个小行星样本返回任务的领导团队选择了四个候选地点作为“起源、光谱释义、资源识别、安全性、风化层探索者”（OSIRIS-REx）探测器“...
The crew of the International Space Station snapped this image of a full Moon as the orbiting complex flew 270 miles above the South Pacific Ocean off the coast of South America. The Space Station is an international partnership of the space agencies of the United States, Russia, Europe, Japan and Canada. In addition to photographs of the beautiful planet we...
2019 August 14 Saturn Behind the Moon Image Credit: Peter Patonai (Astroscape Photography) Explanation: What’s that next to the Moon? Saturn. In its monthly trip around the Earth — and hence Earth’s sky — our Moon passed nearly in front of Sun-orbiting Saturn earlier this week. Actually the Moon passed directly in front of Saturn from...
Credits: NASA 1972年8月，正如NASA科学家Ian Richardson所记得的那样，是炎炎夏日。他在英格兰萨里长大，田地是干燥的棕色，人们试图呆在室内：远离太阳，开着电视。但那个月的几天，他的电视画面一直断断续续。“不要调整设置，”他回忆起BBC的声明，“高温不会造成干扰，是因为太阳黑子（sunspots）。” 当年8月4日至7日破坏电视信号的太阳黑子同时也导致了巨大的太阳耀斑（solar flares），即来自太阳的强大能量爆发。在阿波罗16号和17号任务期间，月球探测器险些遇到太阳爆发。如果当时在轨道上或在月球表面，它们可能会经历由爆发引起的强烈辐射。今天，阿波罗时代的耀斑提醒人们，注意辐射对太空中技术和宇航员的威胁，了解并预测太阳爆发对太空探索的安全至关重要。 自1972年太阳风暴以来...
2019 August 13 Supernova Cannon Expels Pulsar J0002 Image Credit: F. Schinzel et al. (NRAO, NSF), Canadian Galactic Plane Survey (DRAO), NASA (IRAS); Composition: Jayanne English (U. Manitoba) Explanation: What could shoot out a neutron star like a cannon ball? A supernova. About 10,000 years ago, the supernova that created the nebular remnant CTB 1 not only...
In the year since its launch, the Parker Solar Probe has collected a host of scientific data from two close passes of the Sun. In this image, the craft’s WISPR instrument saw the solar wind streaming past during the spacecraft’s first solar encounter in November 2018. The spacecraft carries four suites of scientific instruments to gather data on ...