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Celebrating 10 Years of Revolutionary Solar Views

Twin spacecraft give humanity unprecedented views
of the entire sun at one time, traveling to the far side of our home star over the
course of a 10-year mission.

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These two spacecraft are called STEREO, short for Solar and
Terrestrial Relations Observatory. Launched on Oct. 25, 2006, and originally slated
for a two-year mission, both spacecraft sent back data for nearly eight years,
and STEREO-A still sends information and images from its point of view on the
far side of the sun.

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STEREO watches the sun from two completely new perspectives.
It also provides information invaluable for understanding the sun and its
impact on Earth, other worlds, and space itself – collectively known as space
weather. On Earth, space weather can trigger things like the aurora and, in
extreme cases, put a strain on power systems or damage high-flying satellites.

Because the rest of our
sun-watching satellites orbit near our home planet, STEREO’s twin perspectives
far from Earth give us a unique opportunity to look at solar events from all
sides and understand them in three dimensions.

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We use data from STEREO and other missions to
understand the space environment throughout the solar system. This helps
operators for missions in deep space prepare for the sudden bursts of particles
and magnetic field that could pose a danger to their spacecraft. 

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STEREO has also helped us understand other
objects in our solar system – like comets. Watching how a comet’s tail moves gives
us clues about the constant stream of particles that flows out from the sun,
called the solar wind.

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STEREO is an essential piece of our heliophysics fleet,
which includes 17 other missions. Together, these spacecraft shed new light on
the sun and its interaction with space, Earth, and other worlds throughout the
solar system. 

To celebrate, we’re hosting a Facebook Live event on Wednesday, Oct. 26.

Join us at noon ET on the NASA Sun Science
Facebook
page to learn more about STEREO and ask
questions. 

Learn more about how NASA studies the sun at: www.nasa.gov/stereo

Follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com

Source: You’ll find lots of information about the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Also we have facts about the space station, ISS, SpaceX launch, space program, and outerspace. NASA

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Celebrating 10 Years of Revolutionary Solar Views

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