Indigenous Australians' ancient connection to the night sky is under threat, and it's not just about the stars. As a proud Yorta Yorta and Barapa Barapa man, I see the issue as a loss of cultural heritage and a disruption to the delicate balance of nature. The stars are not just celestial bodies but a gateway to understanding our past, present, and future. They guide us, teach us, and connect us to our ancestors and the land. Yet, the increasing light pollution from our cities is obscuring this connection, and with it, a unique way of knowing and respecting the world.
The night sky is a living classroom, a calendar, a map, a lore book, and a weather forecast all in one. Indigenous Elders pass down this knowledge to younger generations, often outdoors, on Country, beneath the stars. Constellations like Wangel, based on the bright orange star Pollux, and Djurt, based on the red-rumped parrot, guide communities to abundant food sources and teach sustainable practices. The Otchocut constellation, for instance, signals the breeding season for Murray Cod, and the red-rumped parrot constellation indicates the breeding season for parrots. These constellations also hold lore, or rules, that guide sustainable practices, ensuring the balance of nature is maintained.
The stars are also connected to songlines, cultural pathways that connect traditional sites and indicate important resources like waterholes and food. The Seven Sisters dreamtime story, for example, serves as a celestial map for some Indigenous communities in central Australia, mirroring the location of seven waterholes. But as our cities grow, light pollution from streetlights, floodlights, and buildings spreads, making it increasingly rare to see dark nights and starry skies near urban areas.
This has a direct cultural impact on Indigenous communities. Light pollution makes it nearly impossible to connect with the stars and share Indigenous sky knowledge with younger generations. It also affects culturally important species, like the microbat and nightjar, which rely on darkness for survival. Beyond culture, light pollution has widespread ecological impacts, affecting animal growth, behavior, and breeding. Research suggests it can stop clownfish eggs from hatching, shrink spider brains, and disorient threatened seabirds.
The negative effects of light pollution extend to human health, too. Artificial light, especially from LED lights and electronic devices, may trigger sleep and mood disorders and certain cardiovascular problems. So, what can we do to protect our connection to the night sky and preserve Indigenous sky knowledge?
The good news is that we can each help reduce light pollution by making simple lifestyle changes. We can turn off outdoor lights when not in use, use lightbulbs with lower brightness and warmer coloring, choose light designs that direct light only where needed, close curtains and blinds at night, and opt for daytime decorations during festive times. We can also better regulate the use of artificial light outdoors. Countries like France have successfully reduced light pollution by regulating the type of lighting people can use and install.
Together, stronger regulation and simple lifestyle tweaks could help us tackle light pollution and keep Indigenous sky knowledge alive. It's a matter of preserving our cultural heritage, respecting the land, and ensuring a sustainable future for all.
