Stargazers worldwide are grappling with the encroachment of outdoor lighting at night. Advocates for limits on indiscriminate outdoor lighting that obscures night skies worldwide are recognizing efforts by an oil and natural gas developer to reduce scattered light in New Mexico.DarkSky International, an advocacy group for preserving or restoring views of starry skies, announced on Wednesday its first-ever certification of oil and natural gas sites that seek to reduce unwanted light pollution.It recognized Denver-based Franklin Mountain Energy for lighting retrofits at two sites and one new location within a major oil production zone in southeastern New Mexico.