Photo of Comet Crossing the Sky of Brasília Recognized by NASA as “Image of the Day”

Brazil’s capital was the stage for a breathtaking celestial event on Saturday, January 18, 2025. The comet C/2024 G3 (ATLAS), one of the brightest to cross the Brazilian sky this year, was captured in an extraordinary image that now holds a prominent place on NASA’s official website, under the “Astronomy Picture of the Day” (Apod) section. The photograph, taken by Brasília-based photographer Frederico Danin, not only highlights the astronomical phenomenon but also features the iconic skyline of Brasília, including the Paranoá Lake and the TV Tower, during sunset.

This international recognition came as a celebration of local talent and the beauty of the Brazilian sky. On social media, Danin shared his excitement about the news. “What an honor to have my photo featured on NASA’s Apod. Brasília represented,” he wrote. The photograph, which combines the grandeur of a celestial phenomenon with the uniqueness of the city’s urban landscape, was the result of careful planning and the fortune of finding a break in the frequent rain clouds covering the city at this time of year.

Comets like C/2024 G3 (ATLAS) are celestial objects composed of dust and ice, remnants of the solar system’s formation approximately 4.6 billion years ago. The visibility of this comet in Brazil has sparked the interest of amateur and professional astronomers alike, who seized the opportunity to observe it until the end of January.

The significance of comet C/2024 G3 (ATLAS)

The comet C/2024 G3 (ATLAS) became a prominent astronomical phenomenon in 2025 due to its brightness and trajectory, which allowed for privileged visibility in several parts of Brazil. These celestial bodies consist of ice, dust, and rock, and their passage near the Sun creates the characteristic glowing tail visible to the naked eye under ideal conditions. Studying comets provides insights into the early days of the solar system, as they preserve materials unchanged since their formation.

The trajectory of C/2024 G3 allowed for prolonged visibility, a rare feature in comets. Observers in Brasília were fortunate to witness it during a time of year when the region’s night skies are clearer, despite the typical seasonal rains.

Astrophotography in the spotlight

The selection of Frederico Danin’s image by NASA highlights the growing international recognition of Brazilian astrophotography. This art, which combines technical knowledge and a passion for astronomy, has gained attention thanks to individual efforts and increased interest in celestial phenomena. Danin’s photograph demonstrates the potential of Brazil’s capital as a location for astronomical observation, even in an urban environment.

To capture the moment, the photographer used two cameras: one equipped with a 24mm lens for a wide timelapse and another with a 270mm lens for details of the comet. “It was a technical and climatic challenge. There were many clouds, but I managed to find a clear sky interval at the right moment,” Danin shared. The preparation included studying the comet’s trajectory in advance and testing equipment to ensure the image’s quality.

Challenges of urban observation

Like many large cities, Brasília faces challenges in astronomical observation due to light pollution. However, locations such as Parque das Garças and areas near Paranoá Lake offer relatively favorable conditions for capturing images of the night sky. The combination of a wide horizon and less light interference in these areas contributed to the successful image capture.

Interesting facts about comets

1. Comets are often described as “fossils of the solar system” because they contain primordial materials from its formation.
2. The nucleus of a comet typically measures between 1 and 10 kilometers in diameter, but its tail can stretch millions of kilometers.
3. A comet’s brightness increases as it approaches the Sun due to the sublimation of ice into gas.
4. Studying comets has helped scientists understand the origin of Earth’s water and the possibility of life on other planets.

Astronomical phenomena and cultural impact

Observing astronomical events like the passage of C/2024 G3 plays a significant role in popularizing science and encouraging scientific curiosity. These phenomena often also have a cultural impact, inspiring artists and connecting communities to the cosmos. Frederico Danin’s photo, for example, not only captured a unique moment but also placed Brasília on the international map of astrophotography.

Tips for observing comets

1. Choose locations with low light pollution, such as rural areas or parks away from city centers.
2. Use apps or star maps to pinpoint the exact position of the comet.
3. Bring binoculars or simple telescopes for a more detailed experience.
4. Check weather forecasts to avoid cloudy nights.
5. Plan your observation during times with little natural light, such as before dawn or after sunset.

International recognition for Brazilian photographers

The inclusion of a Brazilian photograph in NASA’s Apod is a significant achievement, not only for Frederico Danin but for the entire community of astrophotographers in the country. This recognition reflects the quality and potential of Brazilian contributions to the international astrophotography scene. By showcasing Brazil’s capital as a backdrop for this celestial event, Danin’s image reinforces the connection between science, art, and culture.

Astrophotography statistics in Brazil

• Brazil has around 30 active observatories dedicated to amateur and professional astronomy.
• More than 60% of the images submitted to NASA’s Apod in 2024 came from countries outside the United States, highlighting growing global participation.
• Major astronomical events, such as eclipses and comet passages, attract thousands of spectators in cities like Brasília, Rio de Janeiro, and São Paulo.