description STEREO-B Overview
STEREO-B, also called STEREO Behind, is one of two nearly identical NASA spacecraft launched in 2006 to observe the Sun from separated positions in heliocentric orbit. Together with STEREO-A, it enabled three-dimensional studies of solar eruptions and the space weather they generate. Contact was lost in 2014, briefly recovered in August 2016, and lost again shortly afterward despite subsequent recovery attempts.
help STEREO-B FAQ
How good is STEREO-B?
STEREO-B scores 6.80/10 (Fair) on Lunoo, making it rated in the Spacecraft category. Valuable early mission contribution, but loss of contact and incomplete later operations reduce consensus.
What are the best alternatives to STEREO-B?
See our alternatives page for STEREO-B for a ranked list with scores. Top alternatives include: STEREO-A, SDO (Solar Dynamics Observatory), ISEE-3 / ICE.
How does STEREO-B compare to STEREO-A?
See our detailed comparison of STEREO-B vs STEREO-A with scores, features, and an AI-powered verdict.
Is STEREO-B worth it in 2026?
With a score of 6.80/10, STEREO-B is a solid option in Spacecraft. See all Spacecraft ranked.
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