Specific allegation
When Apophis was discovered in 2004, early orbit estimates briefly allowed small impact probabilities in 2029 and 2036. The allegation says agencies found a definite impact path and concealed it. Follow-up observations eliminated the 2029 collision; the asteroid will make a close but safe pass.
Chronology and context
Optical and radar observations narrowed the orbit after discovery. NASA removed the 2029 impact risk and later ruled out impacts in 2036 and for at least a century. ESA also tracked the asteroid. Updates were public and traceable to additional measurements; the 2029 close pass is not an impact.
Observations and physical record
Radar ranging and astrometry constrain Apophis’ trajectory and uncertainty region. The predicted close passage is closer than geostationary satellites but outside Earth. NASA’s risk tables recorded revisions. A close encounter can affect later orbit estimates, which is why additional observations continue.
Established scientific account
Newly discovered near-Earth objects initially have uncertain orbits; repeated observations shrink the uncertainty. Gravitational keyholes matter for later trajectories, but measured radar data rule out the feared near-term collision. A close flyby is scientifically valuable and planned spacecraft observations will study the object.
Limits and contrary evidence
Small non-gravitational forces affect long-term predictions, and no orbit is infinitely precise. That does not mean a collision is secretly confirmed. Public risk updates show the probability falling as data improved. Discovery uncertainty is not concealment.
What could change the assessment
Check optical astrometry, radar delay, and independent NASA and ESA orbit solutions. Future data can update long-term probabilities. If risk changed, a reproducible orbit and uncertainty analysis would be the evidence; anonymous claims cannot outweigh current tracking.
Apophis is a good example of why an early probability is not a final orbit. Astrometry narrows possible trajectories, and radar measures range much more precisely than a brief optical arc. The public revisions can be checked against observation dates; no confirmed collision solution remains in the current risk record.
Calibrated conclusion
Apophis poses no impact threat in 2029, and current calculations rule out impacts for at least a century. Early uncertainty was publicly resolved.
Sources and scope
- NASA CNEOS ApophisOrbit and risk history for asteroid 99942.
- ESA Near-Earth Object Coordination CentreIndependent orbit monitoring and risk context.
- NASA OSIRIS-APEXMission plans to study Apophis after the 2029 encounter.