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Tag Archives: blog2
Blog Post #2: Solstices and Equinoxes
As in the olden days, the sun was used to measure and chart the passing of time. The sun is the life-source for all living things here on earth and is a vital part of the ecosystem. The fact that the length, intensity, and the spot of the sun’s glow on earth determines the seasons, […]
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Posted in Class, Sun
Tagged astro201, blog2, earth, equinox, koreanculture, seaons, solstice, Solstices/Equinoxes, winter solstice, wintersolstice
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Google Earth Sky
In the video above, Sally Ride, helps teach us how to use Google Earth as a star gazing program. Instead of a program like Stellarium, Google Earth provides a way to actually zoom in on the galaxies around us. The vantage point of Google Earth Sky is not on Earth. Instead, the camera is located at […]
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Posted in Class
Tagged astro201, blog2, Cool Websites/Programs/Apps for Observing, Google Earth Sky
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The slowness of the speed of light
Warp Speed The speed of light is about 3*10^8 m/s, or in more recognizable units, over 670 million miles per hour. To observers on Earth, this is unimaginably fast and allows us to communicate almost instantly with anyone, no matter where they live. In fact, light can travel around Earth over 7 times in a … Continue reading The slowness of the speed of light →
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Seasons on Earth
Unless you live near the equator, you have experienced how much the temperature outside varies by season (or by day in TN). Many people assume this has something to do with Earth’s orbit being an imperfect circle, but they are wrong. As pictured above, it is actually Earth’s tilt that causes seasons to change; […]
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Zodiac
The Zodiac was created about 2,000 years ago as a way to track time. Each month, the sun appears to pass through 1 of 12 constellations that are each tied to a sign (In 1930, the International Astronomical Union, actually defined 13 constellations that the Sun passes through, but one does not have a sign). […]
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Solstices and Equinoxes
Dividing our calendar into four segments, the equinoxes and solstices detail length of daylight hours and how the sun interacts with Earth. The solstices, or days by which the summer and winter are defined by, represent the longest and shortest days in our calendar. June 21, or the summer solstice (in the northern hemisphere), is…
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The Zodiac
The signs of the zodiac have been the focus of astrologers for thousands of years, believed to have influence on the personalities and fortunes of those born under their time in the sun. While there is no scientific evidence to support this belief, there can be no denying that it serves as an important cultural […]
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Is it a parallax or only one? ;)
So one feature of star observation that has allowed us to figure out that we’re not the center of the universe is this really neat and slightly tricky idea of stellar parallax. It’s the phenomenon where based on our position in orbit, a star may appear to have moved based on the stars behind it. […]
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Posted in Class, Stars
Tagged astro201, blog2, ESA, Hipparcos, star observation, stellar parallax, the universe
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Star Walk: Planetarium in Your Pocket
When looking up into the sky at night, usually I can’t identify all the constellations above. The Star Walk app knows where you are and tells you what stars and planets are above you. You can hold it up wherever you are and it is like having a mobile planetarium. Even in the city where […]
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Posted in Observables, Stars
Tagged app, astro201, blog2, Solar System, star walk, technology
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The Grandest Experiment
The majority of physics experiments take place in a small lab found in the basement of a university science building. However, for a grand hypothesis, one needs a grand experiment. The year was 1919 and a nervous Albert Einstein awaited the results of an experiment on the scale never before seen nor bested up to … Continue reading The Grandest Experiment →
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