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Astronomy ​Digest  

Watts Up with Renewable Energy? The cleaner and greener energy of the future! 

By ​Alejandro Acevedo ​on February 8th, 2018  Solar power converts the energy from the sunlight into electricity, this electricity is  received by the solar panels that are placed all around the world. What makes the solar  power? Well solar panels are powered by PV’s that convert the sun rays into electricity and  power TV’s, charge phones and be able to play videogames.   The way that the solar panels work is by placing them outside to get sun. The solar panels  receive photons, particles of light to create the energy. The solar panels been used more  now, probably you have one in your house or someone nearby.   By using solar panels we do save a lot of energy in the world, but we cannot be 100%  powered by solar panels, the sun does not give us energy for the whole day. When the sun  sets, the solar panels stop generating energy. If we need energy at night, we have to go  with another resource.   

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THIS WEEK’S TOP STORIES 

This is a diagram depicting how our sun is made up and its layers within 

What makes up our Sun?   By ​Marie Ramos​ on February 8th, 2017  Earth’s sun was approximately born 4.6 million years ago by a celestial event called the Big  Bang. The Big Bang also created the other celestial objects that can be found within our  universe. In our galaxy, The Milky Way Galaxy, the sun is at the center producing a  heliocentric system, where everything in our systems revolves around our Sun.   The Sun made up of six layers, each of which has its own function that keeps the Sun alive  and also keeps our solar system warm and filled with light. The inner layers of the sun  include the core, radiative zone, and the convection zone. The core is where the Sun’s  energy is stored, light and heat is produced, and where the process of fusion occurs. The  radiative and convective zones is where the energy from the core radiates out of in the  form of radiation and this process takes about a several hundred thousand years in order  for the radiation to disperse out.  

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The outer layers of our sun include the photosphere, chromosphere, and corona. These outer layers of the sun are what scientists are able to observe under specific conditions  and with highly specialized equipment. These outer layers are very hot in temperatures,  averaging around several millions degrees fahrenheit and is also where light is emitted. Sun  spots can also be seen on the photosphere layer of the sun and these sunspots appear from  time to time and are typically much cooler surfaces on the sun.  

 

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Aurora Borealis

Solar Wind By ​Jamie Segura​ on February 8th, 2017  The wind changes based on where on the sun it comes from and how quickly it is rotating.  The velocity of the solar wind is higher over coronal holes, reaching speeds of up to 500  miles (800 kilometers) per second. The temperature and density over coronal holes are  low, and the magnetic field is weak, so the field lines are open to space. These holes occur  at the poles and low latitudes, and reach their largest when activity on the sun is at its  minimum. Temperatures in the fast wind can reach up to 1 million degrees F (800,000 C).  As the wind travels off the sun, it carries charged particles and magnetic clouds. Emitted in all  directions, some solar wind is constantly going around our planet, with interesting effects. The  force of the wind stretches out the magnetic field so that it is smooshed inward on the sun-side  and stretched out on the night side. ​Sometimes the sun spits out large bursts of plasma known  as ​coronal mass ejections​ (CMEs), or solar storms. More common during the active period of  the cycle known as the solar maximum, CMEs have a stronger effect than the standard solar  wind.  When the solar wind carries CMEs and other powerful bursts of radiation into a planet's magnetic  field, it can cause the ​magnetic field​ on the back side to press together, a process known as  magnetic reconnection. Charged particles then stream back toward the planet's magnetic poles,  causing beautiful displays known as the ​aurora borealis​ in the upper atmosphere. Though some  bodies are shielded by a magnetic field, others lack their protection.   

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Here in this picture (not to scale) we can see how the tilt of the Earth affects our seasons, maybe not the Sun.  

How Does The Sun Cause Seasons on Earth?   By ​Joyce Mendoza​ on February 8th, 2018  In reality, the Sun doesn’t causes seasons on Earth. The Earth’s tilt causes seasons. In this  article, I will explain how the sun has a big influence in our seasons.   The Earth is in the Goldilock Zone. That means that the Earth is in a zone where it is not to  close, nor not to far from the sun. This is one of the key point in making seasons.  People thought that we have Summer because the Earth is closer to the sun, and we have  winter because the Earth is far away from the sun. It is winter in the Northern Hemisphere,  but if you ask a person living in Australia how’s the weather, they will tell it’s so hot. This  proves that the distance between the Earth and the Sun don’t cause the seasons.  The Earth is tilted. The amount of sunlight is different based on how the Earth is tilt. The  changing height of the Sun in the sky, along with the changing amount of sunlight received  during the day, causing seasons.       

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