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Misconceptions about physics, space, and planet earth


The Sun is yellow

Despite having a very yellow look to it, the sun is actually giving off an extremely white light. What makes it look yellow is the atmosphere between the sun and the earth.

 

libya 4985 tadrart acacus luca galuzzi 2007 Misconceptions about physics, space, and planet earth

The Sahara is the biggest desert in the world

At 3.6 million square miles, the Sahara is surely the largest body of stand on the planet, but is it the largest desert? Certainly not. A desert doesn’t have to be hot and sandy, it just needs to be dry and inhospitable. Just like Antarctica, which is 5.4 million square miles.

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Astrology can be used to predict things

As cool as it may sound, there have been countless scientific studies that have shown that predicting anything based on the stars and the planets have failed.

 

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When you make a call, you’re bouncing signals off of satellites

The only time phones send signals to satellites is when you are using a satellite phone. When you use a cell phone, however, your phone is sending wireless signals to land based cellular towers.

 

800px the great wall of china at jinshanling edit Misconceptions about physics, space, and planet earth

The Great Wall of China is the only man-made object you can see from space

The reality is that when you’re say, on the moon, you can’t see squat other than a little bit of city lights. However, when on the I.S.S. you can see the Great Wall along with plenty of other man made objects. It’s really all about distance.

 

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Lightning doesn’t strike the same place twice

This just isn’t true. The Empire State Building gets struck upwards of 100 times yearly thanks to the massive lightning rod perched atop it.

 

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Water conducts electricity incredibly well

Pure or distilled water isn’t particularly great at conducting electricity. What makes water so “electrified” is the minerals and other contaminants that are found within the water.

 

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Diamonds come from coal

Coal is typically found about 2 miles below the crust. Most diamonds come from compressed and heated carbon that is found upwards of 90 miles below the crust.

 

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It’s warmer in the summer because the sun is closer

During the summer, the earth is actually further away from the sun than during other months. It’s warmer because of the way that the earth is tilted during these months- allowing the sun rays to hit us more directly.

 

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The Asteroid belt is filled with giant rocks

We can thank TV and film for this myth. The truth is, the asteroid belt, which is around 200 and 300 million miles from the sun, is incredibly lonely. In fact, if you took every asteroid within the belt and put them together, it would weigh 4% of what our moon weighs.

 

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Space is freezing cold

When astronauts are in the sunlight and are floating around near earth, it can get as hot as 250 F. Haven’t you ever wondered why their suits are reflective and white?

 

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