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Category Archives: General
Second Planet to the Sun
The planet Venus is named for the Roman goddess of love and beauty. It is the second largest terrestrial planet. It is also the second brightest natural object in the sky. Venus’ apparent magnitude of -3.8 to -4.6 makes it visible on a clear day. Venus’ atmosphere can be divided into two layers: the cloud … Continue reading Second Planet to the Sun → Continue reading
Posted in Class, General, Sun
Tagged astro2110, Atmosphere, blog3, planet, Solar System, venus
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Newton’s Law of Gravitation and General Relativity
Isaac Newton’s law of universal gravitation first appeared in the Philosophiæ Naturalis Principia Mathematica in July 1687. It describes why that apple fell on Newton’s head (as some stories would have it), why we stay rooted to the ground (without drifting off into space), and why the Earth is locked in orbit around the Sun (among … Continue reading Newton’s Law of Gravitation and General Relativity → Continue reading
Light is Everything
I watched a Crash Course video on light that proved to be really helpful and informative. After watching this video, I realized the importance of spectroscopy and understood what light actually is. The scientific term for light is actually electromagnetic radiation, and even humans emit them. Once again, the video touched upon the wavelength spectrum. … Continue reading Light is Everything → Continue reading
Ancient Achievements
In other religions, there was no need for astronomy except for the creation of the calendar. Ancient Pagans used Stonehenge to determine their calendar. In Early Judaism, they created their calendar. For Christianity, although it helped dictate holidays, it had pushback from philosophy and scientific observations. Astronomy played a major role in early Islam. Besides … Continue reading Ancient Achievements → Continue reading
Posted in Class, General, Historical, Observables
Tagged astro2110, blog2, discoveries
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The Universe as the United States
If there’s one straightforward lesson from astronomy, it’s that we’re tiny. We’re small compared to the Earth’s vast size, which is small compared to the sun, which is tiny compared to the space that contains our solar system, which is a tiny dot in one arm of the Milky Way galaxy, which is one of … Continue reading The Universe as the United States → Continue reading
Power of Ten Reaction
I have a wall in my dorm room where I have started to post quotes that I love. After watching the Power of Ten video, I think I may have another quote that I will post to my wall collection. Philip Morrison, the narrator in the video, says: “This lonely scene, the galaxies like dust, … Continue reading Power of Ten Reaction → Continue reading
Posted in Class, General
Tagged astro2110, blog1, Solar System
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The Size of the Universe, Relative to the Size of a Picnicker
The video begins with a man and a woman out on a picnic, then begins zooming out farther and farther. They start with a focus image 1 x 1 meter wide, then zoom out to a field of vision 10 times larger every ten seconds. So, the first zoom out brings the image to 10m … Continue reading The Size of the Universe, Relative to the Size of a Picnicker → Continue reading
Picture the enormous universe
The vast size of universe is so hard to picture in one image because its size is unbelievably enormous compared to human and Earth. Our planet Earth has the size around 12,742 km diameter. And the nearest object to us is moon which is approximately 384,400 km from us. The number is already huge in … Continue reading Picture the enormous universe → Continue reading
Eclipses and Wildlife
It’s an incredible experience to observe a solar eclipse, but not only for the eclipse itself. A large portion of the animal kingdom reacts to solar eclipses, some of them in surprisingly unique ways. A 2001 study of African wildlife showed that hippos feel like their daily routine has been disrupted, and act nervously after … Continue reading Eclipses and Wildlife → Continue reading
The Expanding Universality of the Cosmic Perspective is Fundamental to Human Prosperity
To call back to the late Carl Sagan, the study of astronomy is a humbling experience. The vast scale of the Universe is beyond true understanding relative to the human experience. Yet it is through the study of this incomprehensible immensity that one develops a regard for the significance an ever growing cosmic perspective affords … Continue reading The Expanding Universality of the Cosmic Perspective is Fundamental to Human Prosperity → Continue reading