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Home Solar Flares

Image: The sun in 2020

enchantedrush@gmail.com by enchantedrush@gmail.com
January 7, 2021
in Solar Flares
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Image: The sun in 2020
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Credit: ESA/Royal Observatory of Belgium

These 366 images of the sun were made by ESA’s Proba-2 satellite in 2020.

READ ALSO

Magnetic waves explain mystery of Sun’s outer layer

Exploring the solar wind with a new view of small sun structures

This satellite is continuously monitoring the changing activity of the sun. One image was selected to represent each day of the year (including leap day 29 February in 2020). Click here for an animated version.

The images were taken by the satellite’s SWAP camera, which works at extreme ultraviolet wavelengths to capture the sun’s hot turbulent atmosphere (the corona) at temperatures of about a million degrees Celsius.

In two images—21 June and 14 December—a partial solar eclipse is visible from Proba-2’s point-of-view.

2020 marked the start of a new solar activity cycle—cycle 25—which lasts about 11 years on average. At the beginning of the year the sun still showed low levels of activity, but at the end of the year it already showed signs of waking up.

In the images of November and December, multiple active regions are visible. These regions represent areas of intense magnetic activity that can produce some of the most dramatic space weather events, such as solar flares and coronal mass ejections. One of these powerful ejections was captured by the ESA/NASA Solar and Heliospheric Observatory (SOHO) on 29 November.

2020 was an important year for solar research, with the launch of ESA’s Solar Orbiter mission on 10 February. One of the key questions for ESA’s Solar Orbiter mission is to understand what drives the 11-year solar cycle.

With its suite of 10 state-of-the-art instruments, Solar Orbiter will perform unprecedented close-up observations of the sun and from high-latitudes, providing the first images of the uncharted polar regions of the sun, and investigating the sun-Earth connection. The mission will provide unprecedented insight into how our parent star works and how we can better predict periods of stormy space weather.

Proba-2 has already supported Solar Orbiter during the mission’s preparation, as technology heritage has passed from the satellite’s SWAP imager to the Solar Orbiter Extreme Ultraviolet Imager. Proba-2 will continue observing the sun and supporting scientific campaigns on Solar Orbiter and other missions in the coming years.



Provided by
European Space Agency


Citation:
Image: The sun in 2020 (2021, January 7)
retrieved 8 January 2021
from https://phys.org/news/2021-01-image-sun.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.



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