Blue Sky -

Why is the Sun Yellow and the Sky Blue?

This video is very interesting because it will teach you on how we perceive electromagnetic waves when looking to the sky 😀


“The Sun” – Reflexion on what we learnt

“The Sun” – Our first week theme

"Handle on the Sun" 1999 - NASA/European Space Agency
“Handle on the Sun” 1999 – NASA/European Space Agency

It took awhile to do it but it has finally ended, a lot of research and passion for knowledge were the key ingredients for this magnificent result.

We learn so much and share what we learnt. Now you know about the sun and what is interesting about him.

  1. How the Sun sees you! – Our first post devoted to elucidating what is the electromagnetic spectrum and the electromagnetic waves released by the sun. After this brief explanation we saw how infrared sees us.
  2. How can you measure Earth’s circumference with the sun? Eratosthenes answers… – Eratosthenes an amazing polymath measured the earth’s circumference, and we reveal the way he made it. Ancient Greeks had always their heart in discovering the Universe.
  3. Sun exposure can make you live longer! – Have you ever heard about the sun’s benefits? Here we depict the most interesting finds about the curative values of the sun. Multiple Sclerosis and the reduction of hypertension and cardiovascular disease. If you haven’t seen it’s a must so be sure to click in the link!
  4. A Glimpse of the sun’s power: How the auroras are formed? – Ever wondered about how auroras are formed? Here you will find the answer, it is sure a glimpse of the sun power!
  5. Set the controls for the heart of the Sun – The title says it all, prepare and embrace what’s in the Sun’s core. New ideas that can change the world.
  6. (Exceptional) A Glimpse of the sun’s power II: How the rainbows are formed? – This is a continuation regarding some strange breathtaking effects that the sun offers us to marvel.


Also there was a post with two documentaries, while it is not an article it is definitively something that you have to view if you want to close this theme! (Documentaries “The Sun”)


The Sun’s structure

Thank you for voyaging through the Sun with me. Stay close for more travels arround different themes!

Set the controls for the heart of the Sun

This is my last article on the Sun theme. I learned a lot doing the researches and I’m happy with the final result, 6 posts (including this one) with interesting new “stuff” to share! I would like some feedback so comments are more than welcomed!

Set the controls for the heart of the Sun

As I was researching this week theme I revisited one TED talk that made me gain confidence and It’s one of the reasons why I’m here today sharing what I everyday learn. This TED talk was made by Taylor Wilson (the second most young person to develop a nuclear fusion reactor).

Nuclear fusion is the process in which two or more atomic nuclei collide at a very high-speed, they merge together and form a heavier nucleus (with more energy) this happens because when they join into one single entity they lose mass that turns in energy. [1] [2]

In the core of the Sun, nuclear fusions take place hence releasing energy in enormous proportions making photons that once on the outside of the sun are mostly in the range of infrared/visible light/ultraviolet. [3]

I continued looking for this amazing teenagers for making this post and one news stroke me, a british boy had surpass this deed. Jamie Edwards became the youngest teenager to build a nuclear fusion reactor with 13 yo he beaten the achievement of 14 yo Taylor. [4]

At the end of that report there’s an announcement of an exhibit at the Imperial College London labeled “Set the controls for the heart of the Sun”, what clearly refers to the nuclear fusion happening at the Sun’s core. [5]

A little more about nuclear fusion… Nuclear fusion is still in research time, but it might one day get to another degree, the degree of supplying abundant and clean energy for all the planet. What is good for this source of energy is that it is much safer than the nuclear power plant energy created (nuclear fission) because it produces no high-level radioactive waste so It will not have the risk of disaster like the one in Chernobyl. [6]

A step to the future: A US$50 bilion project (building costs in July 2014) initiated in 2007 by 6 entities together (China, United States, Japan, European Union, India and South Korea) called ITER aims to create the first fusion power plant. [7]

Good News: Nowadays an experiment made in US changed the idea held that it took more energy for igniting fuel than the energy produced. (February 2014) [8]

Pink Floyd and the Sun

Pink Floyd, for those who never heard of them, are an English rock band formed in London in 1965. Well I could talk more about them but I guess that music, more than words, expresses their path and singularity. [9] “Set the controls for the heart of the Sun” is a track from their second album A Saucerful of Secrets released in 1968 it deploys a psychedelic rock music, paced and full of spiritual force.

I strongly recommend you to listen this track…

In this manner I say “au revoir” and get ready for the next week theme…

References and further reading.

[1] – Nuclear fusion – Wiki

[2] – (audiovisual reference) Nuclear fusion – elearning

[3] – The Sun’s Structure and Nuclear Fusion – earthguide & see  “References and further reading” on this post

[4] – British schoolboy,13, becomes youngest to build nuclear fusion reactor – the telegraph

[5] – Set the controls for the heart of the Sun – CIFS’ Royal Society Summer Science Exhibit 2014

[6] – Chernobyl disaster – Wiki

[7]  – ITER & (audiovisual reference) ITER – in five minutes

[8] – Big leap for fusion: more energy produced that spent igniting fuel – arstechnica

[9] – Pink Floyd – Wiki & Pink Floyd Official Site

Documentaries “The Sun”

Sun contains 99.86% of the mass in the Solar System

Isn’t that amazing. Who would tell that 99.86%, everything else (rocks, planets, dust) are just tiny, tiny, tiny, tiny parts of the Solar System.[1] Find this and other interesting stuff in the documentaries below…


Further reading and References:


A Glimpse of the sun’s power: How the auroras are formed?

I never asked myself this question but as I was searching about the sun, I found how auroras are created. First let me introduce you the Coronal Mass Ejection (CME). A CME is an explosion that occurs in the sun for several hours it happens when two different magnetic fields are brought together this results in the release of high energy particles (solar energetic particles).[1] [2] This massive explosions due to the high energy particles can affect the Earth’s magnetosphere by their enormous energy that turns into a geomagnetic storm thus affecting our electronic devices (e.g. making Gps inaccurate) [3] [4] See the article on for more information concerned to the video [5]

CME are the reason for the formation of the auroras along with the solar wind (plasma released on the upper atmosphere of the sun, consisting mostly in electrons and protons) [6]. When it approaches Earth, it triggers reactions that lead to the emissions of photons (that we perceive as visible light) [7].

I hope you liked and you learned something new!

Aurora Borealis -
Aurora Borealis –


CME Week: The Difference Between Flares and CMEs – NASA

References and further reading.

[1] – Coronal Mass Ejection – Wiki

[2] – Coronal Mass Ejections – NASA

[3] – Sunspots, Solar Flares & Coronal Mass Ejections – Space Weather

[4] – Solar Flare and Electronics – HowStuffWorks

[5] – NASA Sees Spectacular Sun Eruption Like Never Before –

[6] – Solar Wind – Wiki

[7] – About Auroras – Nasa

How can you measure Earth’s circumference with the sun? Eratosthenes answers…

First things first, let’s know who was Eratosthenes, then we will proceed for the answer to this task.

Eratosthenes of Cyrene was a Greek mathematician, geographer and astronomer (he yearned to understand the complexities of the entire world so he was devoted to many areas).[1] He lived between 276 BC – 194 BC and during that time he changed the way we view the world. He created geography and made some progress in science especially mathematics (he created a tool for discovering prime numbers).[2] He is now known for being the first person to measure the Earth’s circumference. [3]

If you didn’t understand it completely, here is better explained. (Any doubt or suggestion be sure to leave it in the comment section)


References and further reading.

[1] – Eratosthenes – Wikipedia

[2] – Eratosthenes – The MacTutor History of Mathematics archive

[3] – Eratosthenes – Encyclopaedia Britannica

[4] – (Project for school students)

How the sun sees you!

We are used to see in only one kind of electromagnetic waves, the visible light waves.[1]

What about ultraviolet waves, how do they make you look?

Sun has three different kinds of light that get into earth: infrared, ultraviolet and visible.[2] What we can only see is just the visible light. So have you ever thought about see in ultraviolet? How would you look?

Here is how the answer looks like…

References and further reading.

[1] – Introduction to the electromagnetic spectrum – Nasa

[2] – Sunlight – Wikipedia