Goethe passed out at eighty - three , and finished his faust only a few years earlier ; gladstone took up a new language when he was seventy 歌德享年83岁,逝世前几年才完成《浮士德》 ;格莱斯顿70岁时又开始学习一门外国语;法国天文学家拉普拉斯78岁死时还在工作着。
If you have knowledge in simple image processing , you may reduce the noise further by taking many exposure on the same object , and stack them together in computer . after gaining some experience , you many want to take close - up photos of clusters and nebula . since the magnifying and light collecting power of the camera lens is not enough , you have to connect the camera to a telescope 在1868年,法国天文学家pierre janssen发现了在太阳的光谱中,有一条奇怪的光谱线,起初科学家以为这是一种地球上并不存在的物质所造成的,所以把这种新物质命名为氦英文为helium ,这个字来自希腊语的helio ,意思即为太阳。
法国: France天文学家: astronomer; astrologer拉普拉斯(法国天文学家,数学家): laplace, p.s. de法国天文学家拉卡伊: nicolas louis de lacaille德国天文学家: friedrich wilhelm; german astronomers俄国天文学家: russian astronomers美国天文学家: american astronomers英国天文学家: british astronomers中国天文学家: chinese astronomers法国天文学会: societe astronomique de france中国天文学家和地理学家: the chinese astronomer and geographer天文学与法国天文学会通报: astronomie et bulletin de la societe astronomique de france德国天文学会: astronomische gesellschaft美国天文学会: american astronomical society中国天文学会: chinese astronomical society中国天文学史: timeline of chinese astronomy甘德 (天文学家): gan de古天文学家: historical astronomers女天文学家: woman astronomer天文学家: stargazer/astronomer; woman astronomer美国天文学会通报: bulletin of the american astronomical society美国天文学协会: american astronomical society是美国天文学会: latexaas英国天文学会会刊: journal of the british astronomical association英国天文学会快报: british astronomical association