Venus May Get Meteor Shower from Ancient Asteroid Breakup

Venus might light up with a meteor shower this summer, thanks to an ancient asteroid that shattered thousands of years ago.

The cosmic show is predicted for July 5, when Venus passes through a stream of dust left behind by a breakup that happened as far back as 21,000 years ago. While most of the display will be too faint to see from Earth, the brightest fireballs could shine as bright as our moon in the night sky.

The discovery began with a cosmic mystery. In 2021, astronomers found an asteroid named 2021 PH27 orbiting unusually close to Venus. Then in April 2025, they spotted a second asteroid, 2025 GN1, traveling on almost the exact same path. Both rocks look identical when scientists study their light signatures, and both complete their trip around the sun in just 115 days, the fastest orbit ever measured for an asteroid.

Italian astronomer Albino Carbognani and his team knew this couldn't be a coincidence. They ran computer simulations going back 100,000 years to solve the puzzle of how these twin asteroids came to be.

At first, the answer seemed elusive. The asteroids had never gotten close enough to Earth, Venus, or the sun for gravity to tear them apart. But then the team noticed something fascinating in their models.

About 17,000 to 21,000 years ago, the asteroids' orbit brought them incredibly close to the sun, just 9 million miles away. That's four times closer than Mercury, exposing the original parent asteroid to extreme heat that cracked its surface and weakened its structure.

As the asteroid spun and heated up, it absorbed energy on one side and released it on the other. This thermal push, called the YORP effect, gradually spun the asteroid faster and faster. Combined with the heat damage weakening the rock, the spinning eventually tore the asteroid in two.

The Bright Side

The breakup scattered dust throughout space, and that cosmic debris has been orbiting the sun ever since. Now, more than 17,000 years later, that ancient dust cloud has spread wide enough to cross paths with Venus.

Carbognani compares this event to Earth's famous Geminid meteor shower, which comes from an asteroid rather than a comet. If the predictions are correct, Venus will experience its own version of the Geminids this July.

Watching the show from Earth will be challenging, though. The best views would come from spacecraft orbiting Venus, but none are currently there. Future missions like Europe's EnVision, launching in 2031 or 2032, or NASA's DAVINCI and VERITAS probes could catch the next occurrence.

For now, skywatchers on Earth can look for the brightest meteors and marvel at how a cosmic event from humanity's ancient past is still creating celestial fireworks today.