Article Type: Evidence Check, Explainer, Peer-reviewed Cross-referencing
📌 Cited
Introduction: What Meteoroids Are
Meteoroids are small solid particles, ranging from sub-millimeter sizes up to meter-scale bodies, that intersect Earth's orbit and produce visible meteors when they ablate in the atmosphere. Determining whether such particles originate inside the Solar System or from interstellar space requires reconstructing their pre-atmospheric orbit.
A recent online essay by Professor Avi Loeb of Harvard University on his Medium Blog highlighted two fireball events with inferred trajectories that could be interpreted as unbound relative to the Sun’s gravity, sparking public interest.