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aprossi

Hubble spies colorful change of seasons on Saturn - CNN - 0 views

www.cnn.com/...index.html

hubble saturn knowledge technology research

shared by aprossi on 26 Mar 21 - No Cached
  • Hubble spies colorful change of seasons on Saturn
  • arth isn't the only planet that experiences a changing of the seasons. The Hubble Space Telescope has revealed the colorful transition from summer to fall in Saturn's northern hemisphere -- a change years in the making.
  • Changes can be seen in Saturn's northern hemisphere as it transitions from summer to fall. The Hubble Space Telescope captured these images in 2018, 2019 and 2020 (left to right).
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  • "These small year-to-year changes in Saturn's color bands are fascinating," said Amy Simon, planetary scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, in a statement.
  • From 2018 to 2020, Saturn's equator brightened between 5% and 10%, while winds near the equator actually slowed from 1,000 miles per hour to about 800 miles per hour.
Javier E

The Washington Monthly - The Magazine - The Information Sage - 0 views

www.washingtonmonthly.com/...the_information_sage029137.php

information communications graphic design understanding

shared by Javier E on 09 Aug 13 - No Cached
  • The underlying philosophy behind sparklines—and, really, all of Tufte’s work—is that data, when presented elegantly and with respect, is not confounding but clarifying.
  • Tufte has shifted how designers approach the job of turning information into understanding.
  • “It’s not about making the complex simple,” Grefe told me. “It’s about making the complex clear.”
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  • Envisioning Information, published in 1990, implored readers to think of information design as a discipline that encompassed far more than the charts, tables, and other purely quantitative forms that had traditionally dominated the field
  • Graphics aren’t just useful for displaying numbers, in other words, but for clarifying just about anything one person is trying to tell someone else. The book opens with a print of a visitor’s guide to the Ise shrine in Japan and ends around 120 pages later with Galileo Galilei’s drawing of the rings of Saturn from 1613.
colemorris

SLS: Nasa's 'megarocket' engine test ends early - BBC News - 0 views

www.bbc.com/...science-environment-54583588

space rocket moon

shared by colemorris on 17 Jan 21 - No Cached
  • The SLS is part of Nasa's Artemis programme, which aims to put Americans back on the lunar surface in the 2020s.
  • When it makes its maiden flight later this year, the SLS will become the most powerful rocket ever to have flown to space.
  • This will be followed - possibly in 2024 - by the first landing on the Moon by humans since the Apollo 17 mission in 1972.
    • colemorris
      colemorris on 17 Jan 21
       
      why are we trying to go back now though?
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  • The four RS-25s can generate 1.6 million lbs (7 Meganewtons) of thrust
  • This will make it 15% more powerful than the giant Saturn V rocket that sent astronauts to the Moon in the 1960s and 70s.
    • colemorris
      colemorris on 17 Jan 21
       
      Thats it? Only 15% stronger in 50 years? Maybe not necesary for more but just surprising
caelengrubb

Copernicus, the Revolutionary who Feared Changing the World | OpenMind - 0 views

www.bbvaopenmind.com/...-who-feared-changing-the-world

shared by caelengrubb on 17 Jan 21 - No Cached
  • The sages had placed the Earth at the centre of the universe for nearly two thousand years until Copernicus arrived on the scene and let it spin like a top around the Sun, as we know it today.
  • Nicholas Copernicus (1473-1543) was not the first to explain that everything revolves around the Sun, but he did it so thoroughly, in that book, that he initiated a scientific revolution against the universal order established by the greatest scholar ever known, the Greek philosopher Aristotle.
  • Aristotle said in the fourth century BC that a mystical force moved the Sun and the planets in perfect circles around the Earth. Although this was much to the taste of the Church, in order to fit this idea with the strange movements of the planets seen in the sky, astronomers had to resort to the mathematical juggling that another Greek, Ptolemy, invented in the second century AD.
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  • hus Copernicus started to look for something simpler, almost at the same time that Michelangelo undertook another great project, that of decorating the ceiling of the Sistine Chapel.
  • Copernicus had a full Renaissance résumé: studies in medicine, art, mathematics, canon law and philosophy; experience as an economist and a diplomat; and also a good position as an ecclesiastical official.
  • By 1514, he had already written a sketch of his theory, although he did not publish it for fear of being condemned as a heretic and also because he was a perfectionist. He spent 15 more years repeating his calculations, diagrams and observations with the naked eye, prior to the invention of the telescope.
  • Copernicus was the first to recite them in order: Mercury, Venus, Earth, Mars, Jupiter and Saturn, the 6 planets that were then known.
  • When Copernicus finally decided to publish his theory, the book’s publisher softened it in the prologue: he said that there were “only easier mathematics” for predicting the movements of the planets, and not a whole new way of looking at the reality of the universe. But this was understood as a challenge to Aristotle, to the Church, and to common sense.
  • It would be 150 years before the Copernican revolution triumphed, and the world finally admitted that the Earth was just one more spinning top.
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