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Viewing Posts from November 2025

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    NASA’S STEREO Observes Interstellar Comet 3I/ATLAS

    The image is made up of vertical streaks of black and various hues of pinks with a hazy white orb at the center, representing the comet 3I/ATLAS. The top left corner has the name of the comet, 3I/ATLAS, and below that, the date range the comet was observed.

    NASA’s STEREO (Solar Terrestrial Relations Observatory) observed interstellar comet 3I/ATLAS from Sept. 11 to Oct. 2. The STEREO mission, designed to study the Sun’s activity and its influence across the solar system, is part of a fleet of NASA spacecraft observing this comet, together providing more information about its size, physical properties, and chemical makeup. […]

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    NASA/ESA’s SOHO Observes Interstellar Comet 3I/ATLAS

    A faint, slightly yellowish point of light—Comet 3I/ATLAS—appears near the center of a grainy, brown-toned background captured by the SOHO/LASCO C3 coronagraph between October 15–26, 2025. The comet is only marginally brighter than the surrounding noise, making it difficult to distinguish.

    The ESA (European Space Agency) and NASA Solar and Heliospheric Observatory, or SOHO, spacecraft captured a glimpse of interstellar comet 3I/ATLAS on Oct. 15–26. During this time period, the spacecraft’s Large Angle and Spectrometric Coronagraph (LASCO) instrument suite spotted the comet crossing its field of view from approximately 222 million miles (358 million kilometers) away, […]

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