Scientists Map Apophis 2029 Flyby for 7.6 Billion Viewers as Asteroid Passes 31,600 Kilometers Above Earth
Updated
Updated · Space.com · Jul 6
Scientists Map Apophis 2029 Flyby for 7.6 Billion Viewers as Asteroid Passes 31,600 Kilometers Above Earth
3 articles · Updated · Space.com · Jul 6
Summary
Visibility maps presented at an Apophis workshop show about 7.6 billion people—roughly 90% of the world—could potentially see the asteroid with the naked eye on April 13, 2029.
The maps project a seven-hour viewing window from 15:00 to 22:00 UTC, with peak brightness at 20:35 UTC over Cameroon and closest approach at 21:45 UTC above the North Atlantic.
At closest approach, Apophis will pass about 31,600 kilometers above Earth—inside geostationary orbit—appearing as a moving point of light rather than a meteor streak.
Scientists stressed the flyby is safe: Apophis, once thought in 2004 to have a 1-in-37 impact chance in 2029, has since been ruled out as a collision threat for at least the next century.
Researchers now see the encounter as a rare natural experiment to watch how Earth's gravity may alter the asteroid's orbit or surface, with Canary Islands observatories among planned monitoring sites.
Beyond the science, could the 2029 Apophis flyby ignite a new, global billion-dollar astrotourism industry?
With Apophis passing closer than satellites, what are the unspoken risks to our critical orbital infrastructure during the flyby?
When Earth’s gravity jolts Apophis in 2029, what changes will prove most crucial for defending against future asteroid threats?
Apophis 2029 Close Approach: Unprecedented Science, Planetary Defense, and Public Participation
Overview
Asteroid 99942 Apophis will make an exceptionally close approach to Earth on April 13, 2029, drawing global attention. Early observations raised concerns about a possible impact, but scientists used refined data to map its orbit and confirmed there is no risk of collision. This rare event offers a unique chance for scientists to study Apophis up close, improving our understanding of asteroids and planetary defense. The flyby has inspired international collaboration, public engagement, and new missions, turning a former threat into an extraordinary scientific opportunity and a global spectacle.