The Malta Independent 17 July 2026, Friday
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Malta’s night sky under siege

Monday, 15 September 2025, 15:01 Last update: about 11 months ago

Dr Lina Klesper is an international legal assistant at PKF Malta

Malta's government plans to turn Fort Binġemma, an old Victorian-era fort in rural Rabat, into a public "astronomy park" run by Xjenza Malta. The agency, which promotes and coordinates scientific research, envisions restoring the fort to its former grandeur and transforming it into a space hub for both astronomical observation and research. Students would be able to spend days and nights alongside space-focused scientists, offering them hands-on exposure to both the cosmos and the natural landscape. In the spirit of the Esplora Interactive Science Centre in Kalkara, the project aims to bring science closer to the public, blending heritage with innovation in what officials describe as a major step forward for Malta's scientific community.

Officials praise the site's isolation as it sits on an elevated ridge far from town with little to no light pollution. The Lands Authority even hailed it as one of the most remote areas of Malta. However, many astronomy experts and environmental groups disagree. They note that Malta's light pollution is so pervasive that even remote sites are affected by skyglow. As one astrophysicist put it, modern Malta is "a wash of white" at night, which could undermine the fort's suitability as an observatory unless national light pollution is urgently curbed.

Light pollution in Malta is extreme and growing. Over the last few decades, urban sprawl and lax lighting have turned most of the islands' nights bright. Studies show streetlights, billboards, and development have proliferated across the archipelago with almost no legislation to control them. A 2020 survey by University of Malta scientists produced a night-sky map, confirming that 87% of Malta's land area registers sky brightness above 20.39 mag/arcsec² and 37% above 19.09 mag/arcsec². On the Bortle scale, which astronomers use to measure night sky darkness and visibility of celestial objects, ranging from Class 1 (darkest skies) to Class 9 (most light-polluted), most of Malta now falls between Class 5 and 6. In practical terms, the Milky Way is visible over only about 13% of Maltese territory.

In recent years, it has been reported that the vast majority of Malta is heavily light-polluted, and the situation is worsening each year. Even designated "Dark Sky" zones are eroding, as seen in the 2006 Gozo plan, which created Dark Sky Heritage Areas on Gozo and Comino. However, light pollution has crept in despite the rules. In 2023, 15 scientists and NGOs even published an open letter urging a nightly blackout in Dwejra (Gozo) to restore its darkness.

Indeed, Malta's only relatively dark spots lie on Gozo's remote coast or high cliffs, not on the main island. Even astronomers who support a Binġemma observatory note that it remains far brighter than Gozo's best sites. Caruana et al. (2020) write that Binġemma's sky is "better than in several places in Malta, [but] light pollution is not 'minimal'". Their measurements found Binġemma worse than coastal ruins like Rdum tal-Vigarju and nowhere near as dark as Gozo's Dwejra. In fact, they warn, any light allowed in Malta quickly drifts over its small territory, "heavily compromising" even rural sites. They argue that for an observatory to function effectively, the Binġemma area would require strict new dark-sky measures banning all non-essential lights in the vicinity. Unfortunately, Malta's light-control policies are stalled, with draft guidelines from 2020 that have never been finalised. And where laws do exist, they are often unenforced.

Against this backdrop, the Fort's proponents point to its remote setting with Xjenza chairman Silvio Scerri highlighting that Binġemma's location makes it "perfect" for astronomy. However, critics argue that these ambitions are rooted in overly optimistic expectations, as Malta's limited size means that artificial light inevitably spills into supposedly darker areas, such as Binġemma, leaving them far from ideal for serious astronomical observation. Observers stress that if Malta is serious about developing a functioning observatory, it must first tackle the wider problem of excessive light pollution by introducing fully shielded, low-temperature lighting across the islands and finally enforcing the long-delayed Environment & Resources Authority (ERA) and Planning Authority (PA) Guidelines for the Reduction of Light Pollution in the Maltese Islands. In this sense, Binġemma may be well-suited for public outreach and education, but meaningful stargazing will require a broader, national commitment to protect the night sky.

Beyond lights, Malta's environmental pressures add to the problem. The island is one of the most densely-populated and visited in the world. With just 316 km² and around 565,000 residents, Malta ranked among the top countries in Europe and globally for population density. Tourism intensifies this as Malta records millions of visitors annually, resulting in roughly five to six tourists for every resident. The result is overcrowding, heavy infrastructure use, and more lighting from overflowing hotels, roads and nightlife venues all night long. In summer, beaches brim with activity well into the night, resulting in noticeable increases in litter and light pollution along the shorelines. Simply put, crowding and 24/7 activity make the skies ever brighter, meaning even truly remote spots have warm glows on the horizon.

All these factors, including extreme light pollution island-wide, legal inertia, and constant development, have led to an impasse. On one side, proponents laud the optics of repurposing a historic fort for science and tourism. On the other, critics caution that without systemic change, the project may be symbolic rather than practical. As astrophysicists agree, astronomy and the preservation of dark skies are inseparable, and without first tackling Malta's pervasive light pollution, the potential of Fort Binġemma as an observatory is likely to remain limited.

In the end, the fate of Binġemma's observatory may hinge on Malta's willingness to curb its night-time brightness. The fort holds promise as an educational hub, but sceptics warn the stars may remain elusive behind Malta's artificial skyglow. Unless local planners take bold measures such as enforcing the draft dark-sky guidelines to managing growth and lighting design, Fort Binġemma could join the ranks of well-meaning projects handicapped by environmental reality. According to experts, the remedy is straightforward in principle - reduce stray light - but implementing it requires political resolve. Perhaps the Binġemma debate will spark that will. Otherwise, we may find that gazing at the heavens from Malta remains a cloudy proposition.


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