保护地球，探索宇宙，发现文明
2023年11月26日 A Dust Jet from the Surface of Comet 67P Image Credit: ESA, Rosetta, MPS, OSIRIS; UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA Explanation: Where do comet tails come from? There are no obvious places on the nuclei of comets from which the jets that create comet tails emanate. In 2016, though, ESA’s Rosetta spacecraft not only imaged a jet emerging fro...
2023年11月25日 Little Planet Aurora Image Credit & Copyright: Victor Lima Explanation: Immersed in an eerie greenish light, this rugged little planet appears to be home to stunning water falls and an impossibly tall mountain. It’s planet Earth of course. On the night of November 9 the nadir-centered 360 degree mosaic was captured by digital camera fr...
2023年11月24日 Stereo Jupiter near Opposition Image Credit & Copyright: Marco Lorenzi Explanation: Jupiter looks sharp in these two rooftop telescope images. Both were captured on November 17 from Singapore, planet Earth, about two weeks after Jupiter’s 2023 opposition. Climbing high in midnight skies the giant planet was a mere 33.4 light-minutes fr...
2023年11月23日 Along the Taurus Molecular Cloud Image Credit & Copyright: Yuexiao Shen, Joe Hua Explanation: The cosmic brush of star formation composed this interstellar canvas of emission, dust, and dark nebulae. A 5 degree wide telescopic mosaic, it frames a region found north of bright star Aldebaran on the sky, at an inner wall of the local bubble alo...
NASA astronauts Michael Hopkins (left) and Rick Mastracchio, show off their Thanksgiving meal in the Unity node of the International Space Station on Nov. 28, 2013. The meal included smoked turkey, green beans, and stuffing. This year, holiday treats including turkey, pumpkin spice cappuccino, and cranberry sauce were sent to the orbital laboratory through N...
2023年11月22日 IC 342: Hidden Galaxy in Camelopardalis Image Credit & Copyright: Steve Cannistra Explanation: Similar in size to large, bright spiral galaxies in our neighborhood, IC 342 is a mere 10 million light-years distant in the long-necked, northern constellation Camelopardalis. A sprawling island universe, IC 342 would otherwise be a prominent gala...
NASA astronaut and Expedition 68 flight engineer Nicole Mann is pictured during a fit check of her spacesuit on Jan. 12, 2023, ahead of a planned spacewalk to upgrade the International Space Station’s power generation system. Selected as an astronaut candidate in June 2013, Mann is the first Native American woman from NASA in space. In 2018, she was chosen a...
2023年11月21日 Fleming’s Triangular Wisp Image Credit & Copyright: Cristiano Gualco Explanation: These chaotic and tangled filaments of shocked, glowing gas are spread across planet Earth’s sky toward the constellation of Cygnus as part of the Veil Nebula. The Veil Nebula itself is a large supernova remnant, an expanding cloud born of the death...
The NIRCam (Near-Infrared Camera) instrument on NASA’s James Webb Space Telescope’s reveals a portion of the Milky Way’s dense core in a new light. An estimated 500,000 stars shine in this image of the Sagittarius C (Sgr C) region, along with some as-yet unidentified features. A large region of ionized hydrogen, shown in cyan, contains intriguing needle-like...
这张来自NASA詹姆斯·韦伯太空望远镜的最新照片以前所未有的细节展示了我们银河系致密中心的一部分，其中包括天文学家尚未解释的从未见过的特征。