保护地球，探索宇宙，发现文明
2023年7月26日 IC 4628: The Prawn Nebula Image Credit & Copyright: Daniel Stern Explanation: South of Antares, in the tail of the nebula-rich constellation Scorpius, lies emission nebula IC 4628. Nearby hot, massive stars, millions of years young, irradiate the nebula with invisible ultraviolet light, stripping electrons from atoms. The electrons eventually...
GE Aerospace and magniX have revealed the paint schemes of the hybrid electric aircraft they will fly as part of NASA’s Electrified Powertrain Flight Demonstration (EFPD) project. Under EPFD, GE Aerospace is developing a megawatt-class hybrid electric powertrain for ground and flight tests in the middle of this decade. Boeing and its subsidiary Aurora Flight...
2023年7月25日 The Eagle Nebula with X-ray Hot Stars Image Credit: X-ray: Chandra: NASA/CXC/SAO, XMM: ESA/XMM-Newton; IR: JWST: NASA/ESA/CSA/STScI, Spitzer: NASA/JPL/CalTech; Visible: Hubble: NASA/ESA/STScI, ESO; Image Processing: L. Frattare, J. Major, N. Wolk, and K. Arcand Explanation: What do the famous Eagle Nebula star pillars look like in X-ray light? To ...
NASA的詹姆斯·韦伯太空望远镜的MIRI（中红外仪器）进行的新测量发现，该系统的内盘距离恒星不到1亿英里（1.6亿公里），可能是岩质类地行星形成的区域发现了水蒸气。（地球的轨道距离太阳9,300万英里。）
Elaborate Passiflora incarnata, or purple passionflower, sit pretty in a field at NASA’s Kennedy Space Center in Florida on June 13, 2023. Kennedy and the National Merritt Island Wildlife Refuge share a border and are home to more than 330 native and migratory bird species, 65 amphibian and reptile species, and more than 1,000 different types of plants inclu...
2023年7月24日 Chemicals Glow as a Meteor Disintegrates Image Credit & Copyright: Michael Kleinburger Explanation: Meteors can be colorful. While the human eye usually cannot discern many colors, cameras often can. Pictured here is a fireball, a disintegrating meteor that was not only one of the brightest the photographer has ever seen, but colorful. The me...
In preparation for the retrieval of the sample return capsule from NASA’s OSIRIS-REx mission, recovery teams tour the projected landing ellipse in the Utah desert on July 17, 2023. The sample, collected from the asteroid Bennu in October 2020 by NASA’s OSIRIS-REx spacecraft, will return to Earth on September 24, 2023. The rocks and dust collected from ...
2023年7月23日 The Antikythera Mechanism Image Credit & License: Marsyas, Wikipedia Explanation: It does what? No one knew that 2,000 years ago, the technology existed to build such a device. The Antikythera mechanism, pictured, is now widely regarded as the first computer. Found at the bottom of the sea aboard a decaying Greek ship, its complexity prompted...
2023年7月22日 Apollo 11: Armstrong’s Lunar Selfie Image Credit: NASA, Apollo 11, Neil Armstrong; Processing: Michael Ranger Explanation: A photograph of Buzz Aldrin standing on the Moon taken by Neil Armstrong, was digitally reversed to create this lunar selfie. Captured in July 1969 following the Apollo 11 moon landing, Armstrong’s original photogr...
2023年7月21日 Galactic Cirrus: Mandel Wilson 9 Image Credit & Copyright: Gabriel Rodrigues Santos Explanation: The combined light of stars along the Milky Way are reflected by these cosmic dust clouds that soar 300 light-years or so above the plane of our galaxy. Known to some as integrated flux nebulae and commonly found at high galactic latitudes, the du...