按月归档: 6 月 2023

可能会祸害地球的小行星之轨道

2023年6月30日 Orbits of Potentially Hazardous Asteroids Illustration Credit: NASA, JPL-Caltech Explanation: Are asteroids dangerous? Some are, but the likelihood of a dangerous asteroid striking the Earth during any given year is low. Because some past mass extinction events have been linked to asteroid impacts, however, humanity has made it a priority to find ...

阿尔忒弥斯二号任务隔热罩安装完毕

Teams install the heat shield on the Artemis II Orion spacecraft at NASA’s Kennedy Space Center in Florida on June 22, 2023. The 16.5-foot-wide shield will ensure the safe return of the astronauts on board as the spacecraft travels at speeds of about 25,000 miles per hour and experiences outside temperatures of nearly 5,000 degrees Fahrenheit. See progress o...

来自引力宇宙的讯息

2023年6月29日 A Message from the Gravitational Universe Illustration Credit: NANOGrav Physics Frontier Center; Text: Natalia Lewandowska (SUNY Oswego) Explanation: Monitoring 68 pulsars with very large radio telescopes, the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has uncovered evidence for the gravitational wave (GW) background b...

迎接挑战:NASA TechRise学生团队开始飞行

Aerostar’s high-altitude balloon is shown here moments after launch carrying payloads from 20 student teams as part of NASA’s TechRise Student Challenge. Credits: Fresh Produce Students from 20 middle and high schools watched as their experiments launched aboard a high-altitude balloon on June 14 as part of NASA’s TechRise Student Challenge. The flight is pa...

M24:人马恒星云

2023年6月28日 Messier 24: Sagittarius Star Cloud Image Credit & Copyright: Emmanuel Astronomono Explanation: Unlike most entries in Charles Messier’s famous catalog of deep sky objects, M24 is not a bright galaxy, star cluster, or nebula. It’s a gap in nearby, obscuring interstellar dust clouds that allows a view of the distant stars in the Sag...

NASA的罗曼和ESA的欧几里得将联手研究暗能量

一台名为欧几里得的新太空望远镜将于7月发射,这是ESA在美国宇航局的资助下完成的一项任务,旨在探索宇宙膨胀加速的原因,即暗能量。到2027年5月,NASA的南希·格雷斯·罗曼太空望远镜将与欧几里得一起,以前所未有的方式探索这个谜题。

在肯尼迪航天中心晒太阳

A young alligator rests on a concrete structure at NASA’s Kennedy Space Center in Florida on April 25, 2023. Alligator breeding season starts in May when males begin courting females. By June, pairs have mated, and females build vegetation nests in the marsh. Eggs hatch in about 65 days. The mother carries her young to the water and protects them from predat...

MAVEN的火星紫外影像

2023年6月27日 MAVEN’s Ultraviolet Mars Image Credit: MAVEN, Laboratory for Atmospheric and Space Physics, Univ. Colorado, NASA Explanation: These two global views of Mars were captured at ultraviolet wavelengths, beyond the spectrum visible to human eyes. Recorded by the MAVEN spacecraft’s Imaging Ultraviolet Spectrograph instrument in July 2022 (le...