July 2026: Astro Letters

Nebulous age In the Ask Astro column of the April 2026 issue is a photograph of planetary nebula NGC 6302. The caption says that NGC 6302 lies about 3,800 light-years away and is a relatively young nebula at about 2,200 years old. What am I missing? How did the light from a 2,200-year-old nebula traverseContinue reading "July 2026: Astro Letters" The post July 2026: Astro Letters appeared first on Astronomy Magazine.

Astrobitica July 28, 2026 1 minute read

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Nebulous age In the Ask Astro column of the April 2026 issue is a photograph of planetary nebula NGC 6302. The caption says that NGC 6302 lies about 3,800 light-years away and is a relatively young nebula at about 2,200 years old. What am I missing? How did the light from a 2,200-year-old nebula traverseContinue reading “July 2026: Astro Letters”

The post July 2026: Astro Letters appeared first on Astronomy Magazine.