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It's really interesting that the sun is also for an 11-year cycle. I did not know that.

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The eleven years cycle of the sun. Verru usefull in my classroom!

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I am impressed with the temperature and radiation of the sun

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The 11 year cycle of the Sun impreesed me!

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This video from the ESA/NASA SOHO (Solar and Heliospheric Observatory) satellite shows the Sun's 11-year cycle of activity. Astronomers have recently observed a change in the atmosphere of exoplanet HD 189733b, which was observed losing over 1000 tonnes of gas per second.

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Have you ever wonder yourself that the solar eclipse is possible due to a extraordinaly coincidence? the only place in the solar system that has observers has perfect solar eclipses!?!

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Have you ever wonder yourself that the solar eclipse is possible due to a extraordinaly coincidence? the only place in the solar system that has observers has perfect solar eclipses!?!

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Vasile, Romania

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During this 11 year-cycle solar activity varies. As we go towards the peak of a solar cycle, the Sun is much more active, meaning that there are a lot more sunspots (appearing mostly around the equator) many more flares, Coronal Mass Ejections and other related features.
Our amazing Sun
What is the most impressive thing you learned about the Sun?

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always there are new thing to learn for sun

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I didn't know that the Sun's magnetic poles flip North into South every 11 years

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The thing that most impressed me is that the Sun changes continuously and quickly

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What happens in radiative zone and how long it takes proton to get from core to photosphere

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The Sun is the closer star from Earth, and the next nearest star (Proxima Centauri) is  9,460,730,472,580 km!

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I am impressed by temperature and radiation, with no destruction of our Earth

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Among other amazing facts, its impressive that light takes around 8 minutes to reach the Earth, but around 30 000 years in its random walk to reach the Sun's surface.

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I have learned many impressive things about the Sun but I particularly like the fact that, when looking at an eclipse, one can tell if the Sun is going through an active or quite period by looking at the solar corona. When the Sun is in a low activity period, we can "see" indirectly the lines of its magnetic field. When the Sun is in a high activity period, there are many sunspots and flares, which involve very intense magnetic fields. I love the amazing images.

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The most impressive thing I've learned today is that the Sun is about 150 million kilometers away from Earth, while the next nearest star (Proxima Centauri) is 4.24 light years (or 9,460,730,472,580 km!) away.
When we look at the sun we never think that it is the star closest to the earth

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The most impressive thing I've learned today is that the   Sun's poles flip every 11 years. I didn't know that!!

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That the frequency of their emissions is represented by a q-Gaussian curve.

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1. The Sun is a unique object in the Universe.

Our Sun may be unique in the sense that it is the star that supports life on Earth, but other than that, it is anything but unique. Our Sun is a star.

2. The Sun is about the size of the Moon. This is why we have total eclipses.

The Sun has 1.4 million km diameter, while the Moon is a little less than 3 500 km across.

I was impressed to learn about the dimension,energy potential and magnetic changes of our Unique Star.

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The most impressive thing is that it is a medium size star.

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The most impressive thing to me is the power of the sun.

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I think that the most impressive thing about the sun is that it is not immutable, but has a its own life: it is “born”, now it is “living” (that is consuming its H), and finally it will “die” distroying also our Earth.

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One of the most important things that I have discovered is the possibility of solar storms and the need to create teroetic models and tools to predict them

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The Carrington event of 1859 - the largest solar flare ever recorded.

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Just before noon on September 1st 1859, the British astronomer Richard Carrington witnessed the largest solar flare ever recorded. The solar flare ejected a plasma cloud that traveled from the surface of the Sun for just over eighteen hours before finally reaching the Earth.

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I didnt know  that after a photon is produced  it takes around 30000  years to get from the core to the photospher

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Here are some:

The Sun contains 99.86% of the mass in the Solar System.
The mass of the Sun is approximately 330,000 times greater than that of Earth. It is almost three quarters Hydrogen, whilst most of the remaining mass is Helium.

The Sun is an almost perfect sphere.
There is only a 10 kilometre difference in its polar diameter compared to its equatorial diameter. Considering the vast expanse of the Sun, this means it is the closest thing to a perfect sphere that has been observed in nature.

One million Earths could fit inside the Sun.
If a hollow Sun was filled up with spherical Earths then around 960,000 would fit inside. On the other hand if these Earths were squished inside with no wasted space then around 1,300,000 would fit inside. The Sun’s surface area is 11,990 times that of the Earth’s.

Source http://space-facts.com/the-sun/

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I was impressed to learn about the dimension, energy potential and magnetic changes of ths sun

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The Sun, being a gaseous body -not a solid object-does not rotate at the same speed all over surface: thus, it rotates about every 35 days near its poles.
I didn´t know it!!!!.

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Many interesting things. The most impressive is the fact „ Every approximately 11 years, the Sun’s poles flip. North becomes South and vice-versa. The Sun behaves more or less the same regardless which pole is North and which South. During this 11 year-cycle solar activity varies. ”

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The most impressive thing ı learned about the Sun is its 11-year cycle. I’ve already known that it turns but I have never considered watching a video about it and I have learnt it takes 11 years. Furthermore first video gave me an idea that is showing different pictures of sun to students and use this knowledge as an Engagement part of a lesson plan is organized 5E model to teach Sun.

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The most impressive, for me, is the time a photon takes to reach the surface of the Sun. It is truly amazing! About 30,000 years!

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I shall do "

Make your own Sunflower" whith my students Thanks

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I find interesting that you can observe magnetic field looking at the corona during an eclipse.

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I found the safe sun viewer activity very interesting, easy to make, and fun to do!

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I didn't know about the variation in temperatures across the zones - very interesting

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I liked the activity Safe Sun viewer

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The very intense magnetic fields of Sun that we can see when there is an eclipse.

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Pole flipping and that the Sun is is not quite a ball of fire.

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Agreed, that is quite something, the pole flipping. Mind-boggling.

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Agreed, that is quite something, the pole flipping. Mind-boggling.

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The surface temperature of the sun is 5500 ° C and the temperature of the core is 15.6 million ° C.
2 million units of solar energy reach the earth.
The energy that the sun has spread in three days, all the oil, trees, natural gas, etc. in the world. Equivalent to fuel.
The sun's rays reach the earth at 8.44 minutes. The Sun is the closest star to Earth. The gravitational force is 28 times that of the Earth.

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I am very impressed to find out so many things i didn't know before as reverse of the 2 poles of the sun, energy, photos, etc.

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It really surprised me, as well as so many other colleagues, that the Sun reverses the 2 poles every 11 years.

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It´s really amazing that the Sun changes its poles every 11 years. I didn't know that, and I think that this is a very interesting aspect to talk with students. Another important thing is related to the temperatures of the different parts of the Sun, and even know the time that lasts a photon to arrive to the corona if it has been created in the nucli.

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"Every approximately 11 years, the Sun’s poles flip. North becomes South and vice-versa. The Sun behaves more or less the same regardless which pole is North and which South."

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I think it's impressive that every approximately 11 years, the Sun’s poles flip...I didn't know it!

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I was most impressed from two things:
- a photon takes around 30 000 years to get from the core to the photosphere!
- the Sun’s poles flip during the 11-year cycle!

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What I find most impressive about "our" star is the insane amount of energy it disperses into space every single second

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Anything yuo learn about the sun is impressive but I think the most impressice is the information that the stars in night sky are suns and in case a star is lost it may take millions of years before we stop seeing it in our night sky.

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That a photon origins in the core and that it takes 30.000  year to get to the surface!

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The information that impresses me the most is the fact that the sun flips over every eleven years!
I find this really fascinating

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The magnetic field of the Sun, and that it can be observed in an eclipse, looking at the Corona.

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as Gina the distance from the moon

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I think that the clarification of terms regarding the different features of the Sun's surface (spots, filaments, etc). Also the interesting material and activities to perform with students.

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The 11-year cycle and the best romantic phrase is "the sun is the star that supports life on Earth"

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The 11-year cycle and the best romantic phrase is "the sun is the star that supports life on Earth"

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The distance from the Moon and its diameter.

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During our last summer programe with our little students(3 to 7 years old) we investigate the power of the Sun. We experimented, tested and discovered what kind of chocolate is melted faster by the sun, what happens with the marshmallows forgotten in the sun and what color is more suitable for our clothes, in the summer heat.  Building solar power toys was also very challenging. The kids loved it.

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The formation of new elements, that's to say, the formation of Helium from Hydrogen. That is amazing!

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It is very difficult to choose only one interesting about the Sun however to show its' powerfulness on the 30th of October of 2003, a solar “storm” damaged North American’s power-station systems, causing a 9 hour blackout in many Canadian cities.

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I 'm impress with the "travel" of a photon. It takes 30.000 years to get from the core to the photosphere.

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The Sun has 1.4 million km diameter, while the Moon is a little less than 3 500 km across. The reason why we have eclipses is their relative position to Earth. It is very interesting

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This info on the sun is great!

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What makes a total eclipse possible: the Sun is 400 X the size of the Moon, and the Sun is also 400xfurther from the Moon than the Moon is from the Earth

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I had heard many things about the Sun but the thing  I didn't know and find very impressive was the 11-year solar activity. I must find out more about that.

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The video clearly explains information that students little know

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All the activity are really exciting, especially the calculation of solar rotation and observed solar. I will use them next year in my class.

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This info on the sun is great! didn't know about the different parts of the sun and their functions before today. Also did not know about the 11 year cycle which is definitely interesting too! students will love having to research this information for themselves.

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It is great so get such a lot of information about the sun. The most impressive thing for me is the Sun's activity: a period cycle of 11 years.

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I have learned a lot about the sun, but what has fascinated me most is how to get all this data through practical workshops, for example: calcualr the size of the sun by means of dark camera.

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I was trying to find an activity we use to do called a "Sunion" (Sun and onion) that had different colored paper representing all of the suns layers. Another popular activity for all kids is making edible suns. Start with plain sugar cookies, cover with yellow icing and then provide other edible materials for sun spots, prominence,  CME, and etc. Basic idea is here:

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We are super excited about the upcoming All American Eclipse! I have students providing outreach to their communities and they are really getting fired up for our trip to the path of totality. We have also looked at where in North, Central, and South America other kids will be able to see the partial eclipse. Getting a little geography with our eclipse prep!

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I would have to say that the interesting rotational properties (equator rotates faster) and how it winds-up and creates all those little North/South magnetic interactions is crazy!!

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The most impressive thing I learned is about size of Sun.

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Our Sun is a major source of light and heat in the solar system.
The connection and interactions between the Sun and the Earth drive the seasons, currents in the ocean, weather, and climate.
The sun is entirely gaseous; there is no solid surface.
There is no discovery date or discoverer. It's the only star to exist in or near our solar system.

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the Sun 11 years activity! It can influence our activities

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The Sun is a star, the nearest of Earth, and make life possible on Earth. Sun gives Earth energy.

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The sun is 400x the size of the moon. I was not aware of it.

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That the sun is a star like the ones we see at night. And that is finite

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I'm so fashinated...

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The Sun is the star nearest to the Earth and then we can observe a stellar activity from a privilegiate position. Despite the Sun appears a quite body, it reveals an intense activity. This is fsntastic!