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3/21/2019

seasons

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Spring just started, how do seasons work?



The tilt of the Earth's AXIS is the most important reason why seasons occur.

We have hot summers and cold winters because of the tilt of the Earth's axis.

​The tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later.

It is summer in the US while it is winter in Brazil
​
Picture

https://www.timeanddate.com/astronomy/seasons-causes.html
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Picture

https://www.bbc.com/news/magazine-34334712


cultures around the world were aware of the equinox



the PHYSICS of something



Photons have no shape - they are massless particles. They are just discrete packets of electromagnetic energy. Anything that travels at the speed of light has zero length. This 
makes it even harder to predict the photon's shape (even if it had one).
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sun physics


Picture

https://www.josephwatso.com/blog/sun
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Picture

https://www2.hao.ucar.edu/Education/questions-and-answers-about-sun
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sun structure


Picture

http://www.holoscience.com/wp/our-misunderstood-sun/
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solar winds


Picture

​http://planetfacts.org/what-are-solar-winds/
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coronal mass ejection


Picture
Picture

https://earthobservatory.nasa.gov/
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http://www.astronomy.com/magazine/ask-astro/2013/05/sun-and-cmes
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Van allen radiation belt


Picture

https://www.britannica.com/science/Van-Allen-radiation-belt
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Picture

https://www.geek.com/news/group-of-physicists-plans-to-wipe-out-earths-van-allen-belts-with-radio-waves-1586037/
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Picture

https://www.esa.int/spaceinimages/Images/2015/06/Current_complexity
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Sun radiation photo of the day


Picture

https://apod.nasa.gov/apod/ap180204.html
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light frequencies at sunset


Picture

http://gsp.humboldt.edu/OLM/Courses/GSP_216_Online/lesson2-1/scatter.html
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sunset in mars



​The atmosphere on Mars is different from that of the Earth and has a significant amount of fine particulate in the atmosphere.

This causes different light scattering than what we see here on Earth.

The dust in the Martian atmosphere allows blue light to penetrate the atmosphere more efficiently than longer-wavelength light.

That causes the blue colors in the mixed light coming from the sun to stay closer to sun's part of the sky, compared to the wider scattering of yellow and red colors.

The effect is most pronounced near sunset, when light from the sun passes through a longer path in the atmosphere than it does at mid-day. this produces a blue tinted sunset on Mars.
​

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    Author: Jazmin Gannon

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