There is a puzzle, noticed by Frege, about inferences from sentences like (F1) "Jupiter has four moons" to sentences like (F2) "The number of moons of Jupiter is four". They seem to be truth-conditionally equivalent but, apparently, they say something about completely different things. (...
这页PPT 的主题是“moons”和“rings”,下面分别列出了“带外行星”(outer planets)所拥有的“moon”和“rings”的情况。“带外行星”即“位于小行星带(asteroid belt)”之外的大型行星。 木星(Jupiter)拥有63颗 moon,土星(Saturn)拥有61颗 moon,天王星(Uranus)拥有27颗moon,海王星(Neptune)拥有21颗 moon。而上...
The Moons of Saturn (2023) Home 1 of 1 The Moons of Saturn (2023)
New research suggests that the birth of some of Saturn’s icy moons, as well as its famous rings, might have taken place a mere 100 million years ago.
If the Moon’s path crosses the plane of Earth’s orbit around the Sun (theecliptic) while the Sun, Moon, and Earth are aligned at theNew Moon, asolar eclipsehappens somewhere in the world. Learn more about the New Moon New Moon: The Moon is between the Sun and Earth. Only the dar...
In the case of a telescope, the "bucket" is an optical device like a lens or a mirror that collects light. 对望远镜来说,“水桶”就是一种像透镜单面镜一样收集光线的光学装置。 We call this device the objective, and the bigger the objective, the more light it collects. ...
—— 引自章节:劳动节晚餐 “看,一轮凸月。” 是罗贝塔告诉乔治凸月是什么的,所以乔治如果聊起凸月,便是在向罗贝塔示好。此刻他们穿行在黑魆魆的玉米地里,乔治说这句话就是在向她示好。 “嗯,看到了。” 罗贝塔没有以沉默拒绝这个示好,但也没有表现出喜悦,只是保持着礼貌。她打了个哈欠,哈欠声里夹杂着一...
The number of moons a planet can have varies from none in the case of Mercury and Venus to many tens such as in the case of Saturn and Jupiter. Our planet Earth has just one Moon, and that is what we see when we look up at night. Our Moon is known as just The Moon. A moon ...
Four Supermoons of 2023 captured by Soumyadeep Mukherjee, Kolkata, India, July-September 2023. Equipment: Nikon D5600, Sigma 150-600c, Benro Tripod In fact, the Moon is always half lit, we just don’t see it that way. Which ever of the Moon phases we’re seeing, the opposite phase ...
The New Moon is when the Sun and Moon are aligned, with the Sun and Earth on opposite sides of the Moon. At New Moon, the Sun, the Moon, and Earth are in alignment. ©timeanddate.com Rare Black Moon concludes 2024 The Crescent Moon, Saturn & Venus align in January 2025 ...