Scumble and glaze – or what you can do with a fox fur, unicorn horn and Christmas tree

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Wide Field: Fox Fur, Unicorn and Christmas Tree

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This is not a hole

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A Hole in Mars

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Male Parson’s chameleon eye, Madagascar

 

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A dance written not only in the stars – congratulations NASA!

每日天文一图(北京天文馆镜像)

Astronomy Picture of the Day

探索宇宙!每天发布一张迷人宇宙的影像,以及由专业天文学家撰写的简要说明。

2020-03-04

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星系NGC 5394和NGC 5395的双人慢舞

影像来源及版权:GeminiNSFOIR LabAURA文字:Ryan TannerNASA/USRA

说明:如果你喜欢慢舞,那么你可能会喜欢上这幅图。图中的这支舞,一个转身就需要几亿年。两个星系NGC 5394和NGC 5395在引力的相互作用下围着对方缓慢绕转,一些新的恒星得以形成,像是点缀在其间的火花一般。这张由位于美国夏威夷莫纳克亚山上的双子座北8米望远镜拍摄的图片,是四个波段的照片叠加处理而成。来自氢气的辐射用红色表示,那里是恒星诞生的温床。这些新恒星的诞生将推动着星系的演化。同样可见的还有暗尘带,这里将最终演化成恒星诞生地。如果观察仔细,你将在背景中发现更多的星系,它们中的一些正在上演属于自己的宇宙舞蹈

(翻译:北京天文馆杨斌)

明日一图预告:open space

‘Let us, then, make a mental picture of our universe: each member shall remain what it is, distinctly apart; yet all is to form, as far as possible, a complete unity so that whatever comes into view, say the outer orb of the heavens, shall bring immediately with it the vision, on the one plane, of the sun and of all the stars with earth and sea and all living things as if exhibited upon a transparent globe.’  Plotinus, The Enneads, V.8.9

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Coincidentia oppositorum

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NGC 2392: Double-shelled planetary nebula

‘(Coincidentia oppositorum is) a state or condition in which opposites no longer oppose each other but fall together into a harmony, union, or conjunction…a unity of contrarieties overcoming opposition by convergence without destroying or merely blending the constituent elements…it…sets forth the way God works, the order of things in relation to God and to each other, and the manner by which humans may approach and abide in God’

H. Lawrence Bond in Nicholas of Cusa, Selected Spiritual Writings, trans., H. Lawrence Bond, Paulist Press, New York, 1997, 335-336 

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The one absolute – change

Why does the Sun’s surface keep changing? Solar granules at record high resolution.

‘The counter-thrust brings together, and from tones at variance comes perfect attunement, and all  things come to pass through conflict.’  

Heraclitus, The Art and Thought of Heraclitus, LXXV

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The immaculate is made maculate

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The space station crosses a spotless sun

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The Sydney Morning Herald – where journalism outdoes science

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First Horizon-Scale Image of a Black Hole

Washington; AP, with Liam Mannix, ‘Humanity stares into black hole abyss’, The Sydney Morning Herald  12.04.19

‘…The black hole is about 6 billion times the mass of our sun and is in a galaxy called M87. Its “event horizon” – the precipice, or point of no return where light and matter get sucked inexorably into the hole – is as big as our entire solar system.

Myth says a black hole would rip a person apart, but scientists said that because of the particular forces exerted by an object as big as the one in M87, someone could fall into it and not be torn to pieces. But the person would never be heard from or seen again.’

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Drama and scale

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The Horsehead Nebula

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Wisps surrounding the Horsehead Nebula

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A window on the world

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NGC 3324 in Carina

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NGC 3324 is also called the Gabriela Mistral nebula, because of the striking resemblance with the Nobel Prize winning Chilean poet, who was born and raised in the Elqui region, home to the Cerro Tololo, Cerro Pachon and Cerro Morado professional observatories.

A man that looks on glasse

On it may stay his eye,

Or if he pleaseth, through it passe

And then the heav’n espie

George Herbert

If the glass through which we look is the sensible world, then with ‘heav’n’ we have Platonism. Substitute ‘atoms and void’ and it is Democritean. If the word were ‘real’, it would fit either philosophy.

W.K.C.Guthrie, A History of Greek Philosophy, The Presocratic tradition from Parmenides to Democritus (vol. 2), Cambridge University Press, Cambridge, 1996, 464

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Space: the distribution of matter

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Gaia’s Milky Way

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Black opal

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