Space Discoveries
Astronomy in the News
Gaia’s 3D view of the Milky Way in motion will reveal how stars move under its combined gravitational pull. This will add to knowledge of the Galaxy’s structure, including parts that are not directly visible from Earth, such as the ‘bar’ — two arms that stick straight out of the Galactic Centre and join…
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Galaxies space
If you gaze out into the night sky with a telescope, and see beyond what’s visible to the naked eye, you could see a lot of “stars” that are actually imposters. Many of the points of light we often think are individual stellar objects are actually galaxies, collections of millions to trillions of stars. Galaxies are composed of stars, dust, and dark matter, all held together…
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Galileo inventions list
A Galileo thermometer consists of a set of floaters immersed in a clear liquid (typically ethanol) inside a sealed glass tube. Today a floater is typically a glass sphere containing a colored liquid and to which is attached a metallic temperature tag. The composition of a floater is irrelevant, its overall density just needs to be calibrated to a certain value and remain stable…
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Contributions of Galileo Galilei in physics
Galileo: the Telescope & the Laws of Dynamics Galileo Galilei (1564-1642) was a pivotal figure in the development of modern astronomy, both because of his contributions directly to astronomy, and because of his work in physics and its relation to astronomy. He provided the crucial observations that proved the Copernican hypothesis, and also laid the foundations for…
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What is Astronomy About?
Often considered the oldest science, it was born of our amazement at the sky and our need to question Astronomy is the science of space beyond Earth’s atmosphere. The name is derived from the Greek root astron for star, and nomos for arrangement or law. Astronomy is concerned with celestial objects and phenomena – like stars, planets, comets and galaxies – as well as the large-scale…
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Galileo Galilei mathematician
© Wikipedia / public domain Text: Helmut Hornung “For the Galaxy is nothing else than a congeries of innumerable stars distributed in clusters. To whatever region of it you direct your spyglass, an immense number of stars immediately offer themselves to view, of which very many appear rather large and very conspicuous but the multitude of small ones is truly unfathomable.”…
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Galileos book
Maria Celeste Galileo s Daughter: Letters and Essays In the spring of 1, Dava Sobel graciously let my students in History Galileo in Context,read an early version of her book, Galileo s Daughter. She also supplied the class with her translations of all from Maria Celeste to Galileo. These are the first complete translations of the letters into English and for those who cannot…
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Galileo and his Inventions
The telescope is one of humankind s most important inventions. The simple device that made far away things look near gave observers a new perspective. When curious men pointed the spyglass toward the sky, our view of Earth and our place in the universe changed forever. But who invented the telescope? The answer remains a mystery today. It is highly probable that as glassmaking…
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