Daily Archives: January 26, 2014

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 Continue reading

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Lightspeed Activate!

The speed of light is 299,792,458 meters per second. ¬†Nothing that we know of travels faster than light, and that’s a good thing because everything we see depends on light traveling from the object to our eyes. ¬†Because light has to travel to our eyes, we always see things as they appeared in the past. […] Continue reading

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Different speeds of light

Although we often refer to “the speed of light” as a singular value (c =¬†299,792,458 m/s), the truth is that when we see light, it is actually moving slower than this speed. This is because the light we see is not moving in a vacuum, but through our atmosphere instead. Light moves at different speeds… Continue reading

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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; […] Continue reading

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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). […] Continue reading

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Size and Expansion of the Universe

I have always thought that the universe is almost unfathomably huge, but until recently I had not spent much time contemplating how humans have determined this. While reading about the topic, I came across information about the Hubble Space Telescope. Not being familiar with astronomy, I did not know much about it or its purpose. […] Continue reading

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Size and Scale of the Universe

The size and scale of the universe in which we live in is mind boggling. This is because we all live relatively short lives and most of us do not even see many of the places here on Earth. In the picture above (if you can see it), we can see just how small everything […] Continue reading

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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… Continue reading

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Potential to Shed New Light on Our Cosmic Calendar

Interplanetary Dust Particles Interplanetary dust is dust that been shorn away from asteroids, comets, planets, and other leftover debris from …

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A Different Spin on Scale

The universe is massive. We know it, we think we can understand it, but every time we see one of those pictures with a tiny Earth next to a huge star, it still blows our mind. So yes, based on the principle of size, I agree that we are tiny and insignificant compared to the… Continue reading

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