To my dear visitors and commenters

Hi, everybody! I've noticed with lots of joy and happiness, that thousands of comments have been written in my posts. It's wonderful that so may people around the world appreciate my work. Therefore, I want to thank you for that and ,at the same time I want to ask you to be this blog's followers. It's fast and easy! Make it be even more visited and spread all over the world! I'm a woman, a teacher of English in Portugal, and I've been away for quite a long time because of my father's health. Unfortunately he died from Covid19 a few months ago. Now I felt it was time to restart my activity in this and other blogs I owe. I've recently created a new one in a partnership with a street photographer, Mr. Daniel Antunes. He's fabulous! https://pandpbydandd.blogspot.com I'd like you to visit it and, who knows, become our followers. The poems, chronicles and thoughts are all mine. Thank you so much! Kisses :-)

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Saturday, February 20, 2016

Awesome time-lapse of the sun over a year



This amazing timelapse footage of the sun was filmed over a whole year by the NASA
It was released to mark the six year anniversary of Nasa's Solar Dynamics Observatory, which was set up to capture changes in the sun. A photo was taken every 12 seconds over the course of a year.
(CBBC Newsround)



NASA’s Solar Dynamics Observatory (SDO) is always following the sun as it orbits the Earth. As part of its ongoing mission, the SDO captures high-resolution images of the sun at regular intervals, allowing scientists to monitor solar activity such as sun spots, solar flares, and coronal mass ejections. NASA’s multi-year mission just completed its sixth year of data collection and commemorated that milestone by releasing a stunning time-lapse video of the past year in review.
The six-minute video shows the sun over a period of just over a year, starting from January 1, 2015 and ending on January 28, 2016. The first half of the video shows the time-lapse with some celestial-inspired background music, while the second half explains the features and wavelengths that you are seeing. The ultra-high-definition images are shown on YouTube at a rate of approximately 30 frames per second with a resolution of 3,840 by 1,260 pixels. Each frame of the video corresponds to 2 hours of time on Earth. On its website, NASA also provides a downloadable version of the video that has a 59.94 fps frame rate with each frame representing one hour.

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