
07/10/2025
On this day, 7 October 2008 — exactly 17 years ago, asteroid 2008 TC3 entered Earth’s atmosphere and exploded over the Nubian Desert in northern Sudan.
The small asteroid, measuring about 4.1 meters across and weighing an estimated 80 tonnes, had been discovered only a day earlier by the Catalina Sky Survey in Arizona. Detected at 06:39 UTC on 6 October, astronomers quickly calculated its trajectory and predicted it would impact Earth within 20 hours — an unprecedented feat at the time.
At 02:46 UTC on 7 October, the asteroid plunged into the atmosphere at more than 12 km per second. It disintegrated at an altitude of 37 kilometers, producing a brilliant fireball that lit up the Sudanese night sky. Hours later, hundreds of meteorite fragments were recovered from the Nubian Desert. This was the first time in history that meteorites were collected from an asteroid that had been discovered in space and tracked before impact.
The event marked a turning point in planetary defense and astronomy. For the first time, scientists proved that Earth’s skies could be monitored closely enough to spot small incoming asteroids and predict their impact location with precision. In the years since, the detection of near-Earth objects has become a key priority for space agencies worldwide, with advanced surveys and missions dedicated to mapping potential threats.