With the launch of the Solar Dynamics Observatory (SDO), the National Aeronautics and Space Administration (NASA) began to constantly monitor the sun. After the launch on February 11, 2010, it became possible to study how the solar activityoccurs and what are its effects on space weather. Recently, a video showing the outermost atmospheric layer of the star - the corona - was released. embark on this trip in the sun with us.
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SDO has allowed for some unprecedented observations and studies of the sun, enabling scientists to observe numerous activities on the star, such as solar flares and coronal mass ejections. Data were obtained from measurements of the atmosphere, magnetic field and energy production. They are being used to improve our understanding of the sun's influence on Earth's climate and environment.
In the video available, you can see the star in
time lapse. In addition, a clear view of the bright active regions passing across the sun's face as it rotates is ensured. A complete rotation around its axis takes about 27 days.In an explanation given by NASA, it was possible to understand a little more how the process works: “With a triad of instruments, the SDO captures an image of the sun every 0.75 seconds”. Alone, the Atmospheric Imaging Assembly (AIA) instrument is capable of capturing images every 12 seconds in ten different wavelengths of light.
Thus, by compiling all the images obtained 108 seconds apart, the video condenses 133 days – about four months – of solar observations into a video of just 59 minutes.
SDO transmits about 1.4 terabytes of data to the agency daily. All this due to a fixed "eye" pointed at the star! In addition to observations of the sun, NASA also intends to use the technology to provide more information about space, in addition to chasing data to keep astronauts safe.
