Results tagged “SOHO”

A Look Back at NASA Solar Missions

Twenty years ago, the Solar and Heliospheric Observatory launched into space and revolutionized our study of the sun and a scientific discipline called heliophysics.

The Solar Cycle As Seen by SOHO

It took 10 years to create this image of our changing Sun. Taken from space by the Solar and Heliospheric Observatory (SOHO), it shows a dramatically different picture than the one we receive on Earth.

Comet ISON Streams Toward the Sun

In the early hours of Nov. 27, 2013, Comet ISON entered the field of view of the European Space Agency/NASA Solar and Heliospheric Observatory.

A cloud of particles known as a coronal mass ejection, or CME, can be seen bursting up and to the right off the sun (obscured by the center disk) in this image. CMEs are a solar phenomenon that can send billions of tons of particles into space.

A comet, streaking into the image from the bottom right, appears to be headed for an encounter with a coronal mass ejection (CME) launched from the Sun. In fact, the comet is in the foreground with the CME occurring on the farside of the Sun. The comet, probably just a few tens of metres wide, was vaporised on its approach to the Sun, and did not survive the flyby.

On August 20, 2013 at 4:24 am EDT, the sun erupted with an Earth-directed coronal mass ejection or CME, a solar phenomenon which can send billions of tons of particles into space that can reach Earth one to three days later.

Side-by-Side Solar Eruptions

Two coronal mass ejections (CMEs) expand side-by-side from the Sun and out into space in this movie, playing out in front of the ESA/NASA Solar and Heliospheric Observatory, SOHO, on 1-2 July 2013.

The European Space Agency/NASA Solar and Heliospheric Observatory, or SOHO, captured this image of a gigantic coronal hole hovering over the sun's north pole on July 18, 2013, at 9:06 a.m. EDT.

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