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APOD: 2026 May 12 – The Conjunction of Comet R3 PanSTARRS and the Orion Nebula

A composite image featuring the blue-tailed Comet R3 PanSTARRS streaking past the Orion Nebula (M42), captured in May 2026.

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APOD: 2026 May 12 – The Conjunction of Comet R3 PanSTARRS and the Orion Nebula

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APOD: 2026 May 12 – The Conjunction of Comet R3 PanSTARRS and the Orion Nebula

Summary: This composite image captures the conjunction of Comet R3 PanSTARRS and the Orion Nebula (M42), highlighting the contrast between the ancient comet and the relatively young stellar nursery.

Featured as the Astronomy Picture of the Day on May 12, 2026, this composite image showcases Comet R3 PanSTARRS, an Oort Cloud relic, passing near the Orion Nebula (M42). The comet displays a vibrant blue ion tail caused by solar ionization, while the background mosaic captures the iconic stellar nursery. The image was created by Julien De Winter and Sascha Ebeler using data collected over three nights of observation.

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1. Introduction to the Conjunction of Comet R3 PanSTARRS and the Orion Nebula 2. Characteristics of Comet R3 PanSTARRS 3. The Orion Nebula (M42) as a Stellar Nursery 4. Technical Details of the Composite Image 5. Scientific Significance of Cometary Observations

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7 days: 7,584

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