哈勃望远镜观测了波江座的迷人星系
NGC 685占据了舞台的中心位置，在墨黑的背景上闪烁着微弱的恒星。这个星系显然是一个棒旋星系，它有明亮的中心棒和斑驳弯曲的旋臂。它距离我们大约5,800万光年，位于波江座。NGC 685位于天赤道以南，在一年中的某些时候从南半球可以看到。
按月归档： 10 月 2023
飞机、云、月亮、黑子与太阳
2023年10月8日 Plane, Clouds, Moon, Spots, Sun Image Credit & Copyright: Doyle and Shannon Slifer Explanation: What’s that in front of the Sun? The closest object is an airplane, visible just below the Sun’s center and caught purely by chance. Next out are numerous clouds in Earth’s atmosphere, creating a series of darkened horizontal stre...
哈勃望远镜最近发布的韦伯图像的多波长视图
这张NASA哈勃太空望远镜的新照片的前景是几片亮粉色和几缕暗红色。NGC 5068是一个棒旋星系，有数千个恒星形成区域和大量星际尘埃。
仙女座星系过去和未来的恒星
2023年10月6日 The Once and Future Stars of Andromeda Image Credit: NASA, NSF, NOAJ, Hubble, Subaru, Mayall, DSS, Spitzer; Processing & Copyright: Robert Gendler & Russell Croman Explanation: This picture of Andromeda shows not only where stars are now, but where stars will be. The big, beautiful Andromeda Galaxy, M31, is a spiral galaxy a mere 2.5 mil...
研究科学家阿方索·达维拉
“I think the experience of putting yourself in an uncomfortable environment and coming at the other end with lessons learned is always positive. Trying to expand the windows of where you feel comfortable gives you a chance to know yourself better. “[Studying life in extreme deserts] is about exploring things that we don’t know about. And a lot of what we don...
火星上的熊？
The Mars Reconnaissance Orbiter (MRO) captured this bit of ursine pareidolia on Dec. 12, 2022. While it resembles a bear we might see on Earth, this is actually a hill on Mars with a peculiar shape. A V-shaped collapse structure makes the nose, two craters form the eyes, and a circular fracture pattern shapes the head. The circular fracture pattern might be ...
宇航员拉贾·查里为塔可之夜做好准备
Taco Night on the International Space Station had a little kick to it on Nov. 26, 2021. In this image taken by NASA astronaut Kayla Barron, fellow NASA astronaut and Expedition 66 flight engineer Raja Chari smiles as he shows off a taco that includes fresh chile peppers. The peppers were harvested from inside the International Space Station’s Advanced Plant ...
哈勃发现宇宙
2023年10月6日 Edwin Hubble Discovers the Universe Image Credit & Copyright: Courtesy Carnegie Institution for Science Explanation: How big is our universe? This question, among others, was debated by two leading astronomers in 1920 in what has since become known as astronomy’s Great Debate. Many astronomers then believed that our Milky Way Galaxy was...
纪念碑谷上空的火之环
2023年10月5日 Ring of Fire over Monument Valley Image Credit & Copyright: Tunc Tezel (TWAN) Explanation: Tracking along a narrow path, the shadow of a new moon will race across North, Central, and South America, on October 14. When viewed from the shadow path the apparent size of the lunar disk will not quite completely cover the Sun though. Instead, the m...
IC 2118: 女巫头星云
2023年10月4日 IC 2118: The Witch Head Nebula Image Credit & Copyright: Abdullah Alharbi Explanation: Does this nebula look like the head of a witch? The nebula is known popularly as the Witch Head Nebula because, it is said, the nebula’s shape resembles a Halloween-style caricature of a witch’s head. Exactly how, though, can be a topic of imagi...