Asteroid Bennu: Close Encounter with Earth in 2182
Asteroid Bennu
Asteroid Bennu, a half-mile-wide celestial body, is currently about 190 million miles from Earth. Scientists have calculated that Bennu will make a close approach to our planet on September 24, 2182.
Impact Probability
While the odds are slim, there is a chance that Bennu could collide with Earth. Scientists give it a one-in-1,175 (0.0037%) chance of impact.
Factors Affecting Bennu’s Trajectory
The asteroid’s trajectory could be affected by various factors, including:
- A nearby flyby in 2135
- Gravitational forces from the sun, Earth, and moon
- The Yarkovsky effect, where asteroids accelerate after absorbing heat from the sun
Gravitational Keyhole
As Bennu zooms by Earth in 2135, it will pass through a gravitational keyhole that could alter its trajectory and send it on a collision course with our planet.
Potential Impact Consequences
If Bennu were to impact Earth, it could create a crater at least five kilometers in diameter, with an area of devastation extending up to 100 times that size. An impact on the Eastern Seaboard states could have catastrophic consequences for the entire coast.
Planetary Defense
Scientists emphasize that there is no immediate cause for concern. The potential impact is still 161 years away, giving ample time for monitoring and potential mitigation efforts.
OSIRIS-REx Spacecraft
NASA’s OSIRIS-REx spacecraft landed on Bennu in 2018 and collected valuable data that helped scientists refine their calculations on the asteroid’s threat to Earth.
Ongoing Monitoring
Scientists continue to track Bennu’s trajectory closely. They will use this information to make informed decisions about potential mitigation strategies if necessary.
International Cooperation
International efforts are underway to mitigate the risks posed by near-Earth objects like Bennu. Scientists and engineers from around the world are collaborating on research and developing technologies to deflect or destroy asteroids that pose a threat to our planet.
Long-Term Implications
The potential impact of Bennu serves as a reminder of the importance of planetary defense. By understanding the risks posed by asteroids and investing in research and mitigation efforts, we can help ensure the safety of our planet and future generations.
