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Browsing Tag

STEREO

2 posts
SSpace
X1.9 solar flare, Coronal hole faces Earth
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X1.9 solar flare, Coronal hole faces Earth

  • December 2, 2025
Welcome to December! New month, new solar activity! Sunspot region 4274 took center stage at the beginning of…
SScience
Traveling through our Solar System at a staggering 209,000 km (130,000 miles) per hour, 3I/ATLAS was made visible by using a series of colorized stacked images from September 11-25, 2025, using the Heliocentric Imager-1 instrument, a visible-light imager on NASA’s STEREO-A spacecraft. Image credit: NASA / Lowell Observatory / Qicheng Zhang.
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Three Heliophysics Spacecraft Observe Interstellar Comet 3I/ATLAS

  • November 24, 2025
NASA’s STEREO (Solar Terrestrial Relations Observatory), the NASA/ESA SOHO (Solar and Heliospheric Observatory), and NASA’s PUNCH (Polarimeter to…
Ireland
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