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STEREO twin solar observatory spacecraft

STEREO is NASA’s paired solar-observatory mission: STEREO-A remains active while STEREO-B’s mission ended in 2018. The two spacecraft provided stereoscopic views of the Sun, coronal mass ejections, and the heliosphere from heliocentric orbits ahead of and behind Earth.

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Identity

Aliases
Solar TErrestrial RElations ObservatorySTEREO A/BSTEREO twin observatories
Family Name
STEREO
Full Name
STEREO twin solar observatory spacecraft
Roles
orbiterobservatoryresearch
Status
active
Type
spacecraft

Details

Description
STEREO is NASA’s paired solar-observatory mission: STEREO-A remains active while STEREO-B’s mission ended in 2018. The two spacecraft provided stereoscopic views of the Sun, coronal mass ejections, and the heliosphere from heliocentric orbits ahead of and behind Earth.
Dimensions
Height M
1.1
Length M
2
Width M
1.2
First Flight Year
2,006
Manufacturer
Operator
Programs
-
Spacecraft Specs
Launch Mass Kg
620
Reusability
expendable

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Assets & Meta

Creation Time
August 1, 2026 at 07:39:30 UTC
Updated Time
August 14, 2026 at 00:18:35 UTC