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3.2K posts


China has launched the robotic Tianwen-2 spacecraft to return samples from a Near Earth Asteroid. China has brought back samples from the Moon twice already, but this will be the first time from an asteroid.
spacepolicyonline.com/news/china-lau…

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@pickover contemporary engineering art pt.m.wikipedia.org/wiki/Passarola
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The year is 1723.
This figure appeals to me because of the intricate, hand-drawn style of 18th-century scientific illustrations, with their detailed line work and aged paper texture. Such craftsmanship! I believe we're seeing a variety of mathematical instruments, likely sundials or astrolabes, with complex geometric projections.
Bion's work is a classic in the history of science, detailing tools for astronomy, navigation, and surveying. We're seeing how early instruments bridged mathematics and practical application.
From "The Construction and Principal Uses of Mathematical Instruments," by Nicolas Bion, 1723.

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@pickover case i did not mention the golden ratio art before rafael-araujo.com
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Mathematics.
The Fibonacci numbers Fₙ have a closed-form expression, known as Binet's formula, named after French mathematician Jacques Philippe Marie Binet (although it was already known by Abraham de Moivre and Daniel Bernoulli). Source: tinyurl.com/y57bxte4

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@pickover nomograms are the most underrated thing. they are stunning. visually surpassed only by rafael araujos golden number art rafael-araujo.com
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The year is 1915.
This figure captivates me. The intricate, hand-drawn lines and curves of the hypocycloid—a curve traced by a point on a smaller circle rolling inside a larger one—create a visually striking pattern. The symmetry and precision are satisfying, especially in a vintage technical drawing style.
Hypocycloids embody a perfect blend of geometry and motion. The meticulous draftsmanship reflects a time when such drawings were crafted with immense care, often by hand, for educational purposes.
Figure from "Geometrical drawing; a collection of plates for practical use in elementary mechanical drawing," by Ferdninad Schraidt, 1915.

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This is a mathematics and statistics joke.
By Sketchplanations, @sketchplanator, Source: tinyurl.com/3hcaed92, Used with permission.

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The Space revolution is coming. It will change our lives forever.
We will need new world class systems, innovative solutions, explore new frontiers.
We will need new talents, heroes of the space revolution, heroes of the new frontiers in space. So be brave!
#EUSpaceDays 🇪🇺
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@d_boeselager you guys get the big decisions right. well done. including procedures and communication.
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📣We, the 5 Volt MEPs, support the #Mercosur Agreement. Here is why ⬇️
Taking decisions such as this one need a lot of prep, as it has many dimensions. We summarized our most important considerations below.

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@VoltEuropa @DuarteCosta5 o volt PT devia unir se ao PS.
o Volt PT é um projeto falhado.
demasiado umbigo.
demasiado 0.15%.
Português

Volt Portugal received 10.998 votes during the elections this Sunday, 18 May. Listen to our lead candidate and Co-President @DuarteCosta5 share his gratitude with all of you. 💜
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@VoltPortugal @DuarteCosta5 @IBrFigueiredo o volt PT devia unir se ao PS.
o Volt PT é um projeto falhado.
demasiado umbigo.
demasiado 0.15%.
Português


@MaduroPoiares é isso mesmo, Miguel. falta é uma visao que convence os céticos e moderados de como avancar em conjunto como pais, de progresso calculável e de adaptacao aos novos tempos. tenta fazer ouvir mais a tua voz pls.
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Mathematics, physics.
If you jump into a hole through the Earth, it takes 42 minutes to reach other side.
"42 minutes" from here: hyperphysics.phy-astr.gsu.edu/hbase/Mechanic…

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A @CamaraLisboa organiza um evento sobre fotografias de "ícones portugueses". Advinhem lá que "ícone português" está incluído ao lado de outros como Ronaldo, Siza, Joana Vasconcelos, Camané e Mourinho...!
@Moedas 😉

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Math
"I do all by hand, on my drawing board with classical architectural drawing tools (a compass, protractor, squares and rules), and I do not use any kind of computer software whatsoever."
By Rafael Araujo, @rafaela31416, rafael-araujo.com, Used with permission.

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