Image: SOHO's equinox sun | 3/26/2019 | Staff
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Last Wednesday, all locations on our planet enjoyed roughly the same number of hours of day and night. This event, called an equinox, takes place twice a year – around 20 March and then again around 23 September.

On these two occasions along Earth's yearly orbit around the sun, sunlight shines directly overhead at the equator. The March equinox marks the beginning of spring in the northern hemisphere and of autumn in the southern one, and vice versa for the September equinox.

ESA/NASA - SOHO - Observatory - View - Parent

The ESA/NASA SOHO solar observatory enjoys an alternative view of our parent star, staring at the sun since 1995 from a vantage position – orbiting the first Lagrange point (L1) some 1.5 million kilometres from Earth towards the sun. Over the years, SOHO has been monitoring the surface and stormy atmosphere of our star, as well as keeping an eye on the solar wind, the flow of charged particles streaming out through the Solar System, enabling a wealth of scientific discoveries.

This montage of images shows SOHO's view of the sun at different ultraviolet wavelengths in the...
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