Infrared nights

Have you ever asked yourself why the night sky is black? Well, what most of us may think is that, it happens because the sun’s light is not reaching our side of the world directly.

Sadly I have to tell you that’s not totally true. 

Our sky is blue during the day time because of the ozone in the atmosphere, but if we didn’t have it, we would see the space directly, like from the moon. Then, why is the universe dark?

If you look through a telescope the universe you will appreciate the light and starts from billions of years ago. You can even see the background light from the bigbang. Therefore, all the light from those “babies stars”, that now are 13 billion of years older should be seen by us every night including the bigbang background in the edge of the universe. Then, nights should be as brighter as sunlight.

Lately an astronomic research has showed that the universe expansion is not the only cause of this blackish night sky. The stars movements also make their light change into an infrared light, including the bigbang background radiation. This kind of light can’t be appreciated by human eyes.

What we can’t perceive by ourselves it’s really impressive, Did you know about this? Do you think that books should be changed? What else had been ignored by our none-complete sensorial system? 

(source: http://youtu.be/gxJ4M7tyLRE)

Please Moon, don't walk away

Nowadays it's believed that time is passing really fast, but my dear classmates this is just a cultural product. Actually, time has passing everytime a little bit slower than before. Why? because our dear symbol of the night is going away from us. Don't worry! It's not the end of the world.

In simple words, the tide effect that connects the moon with our planet has being decreasing. The sun has being causing all this. Therefore the distance between the beautiful moon and us is growing, affecting to the energy our planet uses to rotate.

Scientists think that millions of years ago a day consisted of 22 hours and a year of 397 days, and the moon could be appreciated in its enormous figure from the earth's surface. 

And probably far into the future a day will last 47 of our present days, and we won't see the moon from where we are now. A world that obviously, we won't appreciate (the sun will blow up first with the earth-moon system).

An amazing consequence of this will be that we won't have total eclipses anymore.

What we must learn about the moon movement is that conventions shouldn't be believed when we talk about cosmic matter. Our universe can surprise us every day. What do you think? Are you ready to let the moon go?

I hope you can make it George :)

(Source: http://www.npr.org/blogs/13.7/2012/09/12/160944289/time-moves-with-the-moon)