The fireball visible in Luxembourg’s night sky on Sunday, which left a trail of smoke and debris believed responsible for damaging houses in Koblenz, was likely a meteorite, according to experts. Speculation about the nature of the object quickly arose on Sunday, however, confirming this with complete certainty requires analysing the fragments that reached the ground.
According to Dr Carolin Liefke, deputy head of the House of Astronomy, Centre for Astronomy Education and Outreach at Heidelberg University, the luminous phenomenon corresponds to what astronomers call a fireball or bolide, an object burning up as it passes through Earth’s atmosphere. Dr Liefke explained further that scientists must first determine whether such an object is natural, meaning a rock from space, or artificial, such as space debris.
Based on the images currently available, however, the evidence strongly suggests a natural meteorite, she said. She added that fragments have already reportedly been found, and that the visual material circulating closely resembles typical meteorite events.
Initially, scientists and observers were not entirely certain about the nature of the object. On Monday morning, Nicolas Feierstein, former president of the Luxembourg Amateur Astronomers’ association, suggested that it might have been space debris.
He referred to a report from NASA about a 2.6-tonne pallet of batteries that had been jettisoned from the International Space Station (ISS) and later burned up in Earth’s atmosphere. However, while NASA had indeed issued such a statement, it dated from 8 March 2024 at 6.46pm.
The date and time matched the event, but the year did not. With the latest analyses, experts now believe the phenomenon was indeed caused by a meteorite.
If space rocks do not completely burn up in the atmosphere, they can potentially pose a danger. This raises the question of why the public was not warned beforehand.
Dr Liefke explained that such events occur constantly, but usually on a much smaller scale. In most cases, the meteorites that reach Earth are so tiny they can only be detected under a microscope, she said.
She clarified that several tonnes of cosmic material fall to Earth every day, but that only rarely do larger objects survive the journey through the atmosphere. When larger fragments do reach the ground, they can cause damage because they travel at extremely high speeds, Dr Liefke said.
Dr Liefke also said that events of this kind occur in Europe at least once a year, adding that it is particularly valuable to analyse any recovered fragments. She explained that meteorites can be seen as “messengers from the past of our Solar System”.
Dr Liefke explained further that they formed at the same time as the Solar System itself, around 4.5 billion years ago, and have typically drifted through space largely unchanged since then. Studying them could therefore provide valuable insights into the early history of the Solar System and the formation of Earth, according to Dr Liefke.
Dr Richard Moissl from the European Space Operations Centre in Darmstadt also confirmed that the object was likely a meteorite measuring several metres in diameter, which he described as a relatively unusual phenomenon.
