保护地球，探索宇宙，发现文明
In this 30-second exposure, a meteor streaks across the sky during the annual Perseid meteor shower, Wednesday, Aug. 11, 2021, as seen from Spruce Knob, West Virginia. Learn more about the annual Perseid meteor shower. Find out how you can see them in skies across North America! Image Credit: NASA/Bill Ingalls 在这张30秒的曝光照片中，2021年8月11日星期三，英仙座流星雨期间，一颗流星划过天空。照片摄...
A Northrop Grumman Antares rocket carrying a Cygnus resupply spacecraft is seen in the vertical launch position on the Mid-Atlantic Regional Spaceport’s Pad 0A, Saturday, Aug. 7, 2021, at NASA’s Wallops Flight Facility in Virginia. Northrop Grumman’s 16th contracted cargo resupply mission with NASA to the International Space Station will deliver about 8,200 ...
2021年8月12日 A Beautiful Trifid Image Credit & Copyright: Mike Selby Explanation: The beautiful Trifid Nebula is a cosmic study in contrasts. Also known as M20, it lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. A star forming region in the plane of our galaxy, the Trifid does illustrate three different types of astrono...
2021年8月11日 Mammatus Clouds over Saskatchewan Image Credit & Copyright: Michael F Johnston Explanation: When do cloud bottoms appear like bubbles? Normally, cloud bottoms are flat. This is because moist warm air that rises and cools will condense into water droplets at a specific temperature, which usually corresponds to a very specific height. As water ...
2021年8月10日 Fire in Space Image Credit: NASA Explanation: What does fire look like in space? In the gravity on Earth, heated air rises and expands, causing flames to be teardrop shaped. In the microgravity of the air-filled International Space Station (ISS), however, flames are spheres. Fire is the rapid acquisition of oxygen, and space flames meet new oxygen...
NASA的机智号火星直升机在2021年7月24日的第10次飞行中，用其高分辨率彩色相机拍摄了左边的图像，用其导航相机拍摄了右边的图像。 影像来源：NASA/JPL-Caltech 这项殊荣是为了表彰这架开创性的旋翼飞机在火星上的历史性飞行。 这架“可以的小直升机”已经获得了人们的关注、粉丝和无数赞誉，最新的奖项是《航空周刊》网络获得的2021年桂冠奖。桂冠奖旨在表彰航空航天领域的非凡成就。 2021年4月19日，这架4磅（1.8 公斤）重的旋翼飞机在火星上盘旋了39.1秒，这是在另一个星球上首次进行动力控制飞行——这是真正的莱特兄弟时刻。从那时起，机智号已经完成了11次飞行，总距离刚刚超过1英里(2.2公里)，在第10次飞行中达到了40英尺(12米)的高度记录。 机智号搭乘毅力号前往火星，于2021年2月18日...
Happy #NationalBookLoversDay! NASA not only explores the universe, we also publish books on our discoveries! Learn about Hubble and other science discoveries, NASA history, aeronautics, engineering, and so much more. Find them all in our e-books archive. And so you know, we publish in all the most popular formats. Image Credit: NASA 祝#国家图书爱好者日 快乐! NASA不仅探索宇宙...
2021年8月9日 Perseus and the Lost Meteors Image Credit & Copyright: Tomas Slovinsky (Slovakia) & Petr Horalek (Czech Republic; Institute of Physics in Opava) Explanation: What’s the best way to watch a meteor shower? This question might come up later this week when the annual Perseid Meteor Shower peaks. One thing that is helpful is a dark sky, ...
2021年8月8日 A Perseid Below Image Credit: NASA ISS Expedition 28 Crew, Ron Garan Explanation: Earthlings typically watch meteor showers by looking up. But this remarkable view, captured on August 13, 2011 by astronaut Ron Garan, caught a Perseid meteor by looking down. From Garan’s perspective onboard the International Space Station orbiting at an altitu...
2021年8月6日，NASA毅力号火星车上的一台危险相机拍摄的这张图片，显示了被火星车科学团队称为“铺路石”上钻出的洞，为这次任务首次尝试从火星上收集样本做准备。 影像来源：NASA/JPL-Caltech NASA的毅力号火星车首次尝试在火星上收集岩石样本并将其密封在一个样品管中，随后向地球发送了数据，表明在最初的取样活动中没有收集到岩石。 火星车携带了43个钛合金样品管，正在探索杰泽罗火山口，它将在那里收集岩石和风化层（破碎的岩石和尘埃）的样品，以便将来在地球上进行分析。 “虽然这不是我们希望的‘一杆进洞’，但开辟新领域总是有风险的，”位于华盛顿的NASA科学任务局副局长托马斯·泽布亨(Thomas Zurbuchen)说。“我相信我们有正确的团队在做这件事，我们将坚持不懈地寻找解决方案，以确保未来的成功。...