Tag Archives: astro2110

Historical Astronomers in Context

Posted on February 1, 2023 by zws42

Tycho Brahe (1546-1601) Tycho Brahe was the best naked eye observer of all time. He lived before the invention of the telescope, and therefore had to rely on his vision for all of his observations. He presented a geo-heliocentric model of the solar system in which the sun and moon revolved around Earth but everything […] Continue reading →

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Historical Astronomers in Context

Posted on February 1, 2023 by willems49

Of the given astronomers, I chose Tycho Brahe (December 14, 1546 – October 24, 1601): Tycho Brahe created precise instruments for observing and measuring the sky before the creation of the telescope. He kept a meticulous record of stars and planets- in particular Mars along with a new model of the solar system which would […] Continue reading →

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Historical Astronomers in Context

Posted on February 1, 2023 by sydneyastr2110

Johannes Kepler Johannes Kepler, who lived from 1571 to 1630, revealed three laws of planetary motion which explain the motion of the planets in the solar system. The first law concerning orbits states that all planets move around the Sun in an elliptic orbit. The second law, the “area law,” implies that a planets angular […] Continue reading →

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4 Best Applications for Sky Observation

Posted on January 31, 2023 by Rocket Man

Since the day humans first appeared on earth to this day when we have come to the modern era of science, the colossal sky that stays above us has always made us think about our existence in this universe. In ancient times, people used to only observe the sky with their bare eyes. But as […] Continue reading →

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historical astronomers in context

Posted on January 30, 2023 by Emma Williams

Johannes Kepler (born December 27, 1571– died November 15, 1630) contributed to the field of astronomy by the formulation of his 3 Laws of Planetary Motion, which were later derived and formalized by Isaac Newton. The laws are 1) that planets move in elliptical orbits around the sun at one focal point, 2) that a […] Continue reading →

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Who is The Rocket Man?

Posted on January 26, 2023 by Rocket Man

The Rocket Man came from a galaxy far far away. He came down to earth to study Astronomy. He is in Dr. G’s class at present. What is The Rocket Man’s favorite star? The Rocket Man likes Astronomy because Astronomy has made it possible for him to make it to the planet earth. His favorite […] Continue reading →

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The Unfathomable Scale of the Universe

Posted on January 24, 2023 by georgeboardman20

A logarithmic scale of the universe, used to highlight humanity’s cumulative knowledge about the universe. Source: A Logarithmic View of the Universe The above image will highlight what I’m writing here about today, because in all of our daily lives we’re pretty myopic, but for good reason! We grew up here on this planet with […] Continue reading →

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Post 1

Posted on January 23, 2023 by berlinbe

Like other electromagnetic particles, light has a specific velocity at which it travels. Further, it is presumed to be the fastest theoretical speed of any particle. The speed of light–referred to as “c” in a vacuum–is roughly 300,000,000 m/s. Since it moves so fast, most people never observe light as a moving particle or something […] Continue reading →

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Scale and Travel Times

Posted on January 23, 2023 by dromalley

At this very moment, the Voyager 1 spacecraft is hurtling through space at about 61,500 km/h each and every hour, carrying it ever further from our Solar system which it left 18 years ago. But despite this staggering speed, it would still take Voyager more than 75,000 years to reach the nearest star, Alpha Centauri. […] Continue reading →

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The Cosmic Calendar 🪐

Posted on January 23, 2023 by lightwyrs

“We humans appear on the cosmic calendar so recently that our recorded history occupies only the last few seconds of the last minute of December 31st.” -Carl Sagan The Cosmic Calendar is a concept presented by famous astronomer Carl Sagan. In this diagram, the 13.8 billion year history of the universe is condensed into a […] Continue reading →

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