保护地球，探索宇宙，发现文明
2023年4月11日 North Star: Polaris and Surrounding Dust Image Credit & Copyright: Javier Zayaz Explanation: Why is Polaris called the North Star? First, Polaris is the nearest bright star toward the north spin axis of the Earth. Therefore, as the Earth turns, stars appear to revolve around Polaris, but Polaris itself always stays in the same northerly direc...
科学家们已经使用IXPE创建了蟹状星云磁场的详细而细致的地图，揭示了比以往更多的内部工作原理。发表在《自然天文学》杂志上的新结果，有助于解决关于被充分研究的蟹状星云的长期谜团，并为未来的研究提出了新的问题。
NASA Administrator Bill Nelson (left), Jeannie Schulz, widow of Peanuts creator Charles M. Schulz, and Snoopy are all smiles during a Wednesday, April 5, 2023, visit to NASA Headquarters in Washington. As part of the visit, Schulz showed the flown Artemis I Snoopy zero gravity indicator before it goes to its final home for display at the Schulz Museum in San...
2023年4月10日 IC 2944: The Running Chicken Nebula Image Credit & Copyright: Daniel Stern Explanation: To some, it looks like a giant chicken running across the sky. To others, it looks like a gaseous nebula where star formation takes place. Cataloged as IC 2944, the Running Chicken Nebula spans about 100 light years and lies about 6,000 light years away to...
NASA詹姆斯·韦伯太空望远镜的一张新的中红外图像显示了从地球上看到的340年前的超新星遗迹仙后座A（Cas A）。Cas A是我们银河系中已知的最年轻的大质量恒星爆炸残骸。
Industrial-size robots built by high school teams compete against each other in a game at Rocket City Regional, Alabama’s annual FIRST Robotics Competition, in this March 16, 2018, image. At this year’s competition, more than 1,000 high school students on 50 teams from 15 states, Mexico, and Brazil will compete. NASA and its Robotics Alliance Project p...
2023年4月9日 The Egg Nebula in Polarized Light Image Credit: Hubble Heritage Team (STScI / AURA), W. Sparks (STScI) & R. Sahai (JPL), NASA Explanation: Where is the center of the Egg Nebula? Emerging from a cosmic egg, the star in the center of the Egg Nebula is casting away shells of gas and dust as it slowly transforms itself into a white dwarf star. The...
2023年4月8日 M100: A Grand Design Spiral Galaxy Image Credit: NASA, ESA, Hubble; Processing: Judy Schmidt Explanation: Majestic on a truly cosmic scale, M100 is appropriately known as a grand design spiral galaxy. It is a large galaxy of over 100 billion stars with well-defined spiral arms that is similar to our own Milky Way Galaxy. One of the brightest member...
2023年4月7日 Rigel Wide Image Credit: Rheinhold Wittich Explanation: Brilliant, blue, supergiant star Rigel marks the foot of Orion the Hunter in planet Earth’s night. Designated Beta Orionis, it’s at the center of this remarkably deep and wide field of view. Rigel’s blue color indicates that it is much hotter than its rival supergiant in Orio...
From left, astronauts Jeremy Hansen, Victor Glover, Reid Wiseman and Christina Hammock Koch talk with television host Stephen Colbert on “The Late Show with Stephen Colbert” on April 5, 2023. The astronauts, who will orbit the Moon aboard Artemis II in late 2024, appeared on the show after being named by NASA and the Canadian Space Agency on Apri...