Which sustainability initiative has revolutionized the telescope industry in the past decade, significantly reducing its environmental impact?

The astronomy industry has embraced sustainability initiatives in recent years, recognizing the importance of preserving not just our planet but also the dark skies essential for observation. Major telescope manufacturers, observatories, and astronomy retailers have made significant changes to their operations and products. Test your knowledge about how the astronomy industry is adapting to environmental challenges while still delivering stellar products and experiences.

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The adoption of recycled aluminum and carbon fiber in telescope construction, reducing new material extraction by approximately 40%
The implementation of solar-powered observatory domes, which has been limited to only 15% of major facilities due to technical challenges
The switch to plant-based lens coatings, which while eco-friendly, have reduced optical clarity by 8% compared to traditional coatings
The introduction of biodegradable eyepieces that decompose after 5 years, requiring frequent replacement despite environmental benefits