You cannot look at the Sun without goggles,because in this way you can severely damage the retina - the inner lining of the eye, on which the visual cells are located. And there is nothing interesting in viewing the celestial body through the sunglasses, because you will see only a burning ball. Instead of this potentially dangerous and uninteresting activity, it’s best to watch a video recently posted by NASA’s aerospace agency. It shows a 10-year fragment of the life of the sun. People had the opportunity to see in detail how other planets fly between the Earth and the Sun, as well as observe the explosive processes that occur 150 million kilometers from us. The published video lasts more than an hour, so let's consider only the most interesting fragments.
Exploration of the sun
According to NASA, the video was made based on data collected space observatory Solar Dynamics Observatory (SDO). It was launched into the orbit of our planet on February 11, 2010, and for ten years now it has been following the changes in the Sun with the help of three scientific instruments. The most important of them is the Atmospheric Imaging Assembly (AIA) camera, which takes pictures of a celestial body every 12 seconds. To date, the tool has received more than 425 million high-resolution images of the Sun. This entire data set weighs more than 20 million GB - it is not surprising that after combining them we get an hour-long movie.
Published video shows activitySuns from June 2, 2010 to June 1, 2020. You may notice that in some moments complete darkness arises - this is due to the fact that the Earth and the Moon stood between the Sun and the observatory. We and our satellite sometimes obscured the Solar Dynamics Observatory's view of the largest star, so it shot, in fact, empty frames. Also, at some points, the Sun abruptly goes off to the side - NASA representatives explained this by the fact that sometimes they tuned instruments and changed their direction. You can see that the video does not contain frames about the state of the star in 2016, which is associated with malfunctions in the AIA tool. He was later repaired successfully.
Also on the video you can look at the impressive phenomena taking place on sun crown - the outer atmosphere of the star, which is located above the previously mentioned chromosphere. Pay attention to the so-called prominenceswhich are giant fountainsincandescent gas held by the magnetic field of a star. Fountains consist of substances whose temperature is the same as that of substances from the chromosphere. But against the background of a hot sunny corona prominences are cold and very dense formations. Some of these formations exist for months, but most of them move at a speed of about 100 kilometers per second and disappear within a few weeks.
Here are a few key points of the video:
- after 12:24 minutes you can notice that on the top of the sun passes some kind of object. This is the moment of Venus passing through the disk of the Sun - the event took place in 2012;
- at 36:18 and 57:38 minutes shows the passage of Mercury. This is the smallest planet in the earth group, so it's quite difficult to see this event on video. Better watch this video;
- at 6:20, 13:50, 20:25 and 44:20 minutes captured the most powerful solar flares that have occurred in the last ten years.
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It is important to note that the sun is not immortalan object. Someday something terrible will happen to him that will surely lead to the death of all mankind. Lyubov Sokovikova wrote about what will happen to the Sun in the future - I recommend reading it!