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The detailed images recorded by SDO in 2011–2012 have helped scientists uncover new secrets about the Sun. The Solar Dynamics Observatory (SDO) is a NASA mission which has been observing the Sun since 2010. [4] Launched on 11 February 2010, the observatory is part of the Living With a Star (LWS) program. [5]
The images, obtained in March 2023 by the ESA's Solar Orbiter, represent what the agency says are the highest-resolution views of the sun's surface, known as the photosphere, to date.
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The frequency drifts from higher to lower values because it depends on the electron density, and the shock propagates outward away from the Sun through lower and lower densities. By using a model for the Sun's atmospheric density, the frequency drift rate can then be used to estimate the speed of the shock wave.
The images, taken on March 22, 2023, and released Wednesday, showcase different dynamic aspects of the sun, including the movements of its magnetic field and the glow of the ultrahot solar corona ...
A European spacecraft is showing us how dynamic the Sun is with newly released images, the highest-resolution images of our star's surface so far.
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These particles can escape the Sun's gravity because of their high energy. The solar wind is divided into the slow solar wind and the fast solar wind. The slow solar wind has a velocity of about 400 kilometres per second (250 mi/s), a temperature of 2 × 10 5 K and a composition that is a close match to the corona.