Antapex
For planets like Earth, this is the trailing side of the planet's orbital path around the Sun. 2. Antapex and Impact Dynamics
Research into lunar "cold spots" indicates that higher impact rates on the leading (apex) hemisphere contribute to the more rapid fading of these features compared to those on the trailing (antapex) side [7]. antapex
Earth is more likely to encounter ISOs during the winter months when its orbital position aligns with the solar antapex [2, 3]. While the fastest objects approach from the solar apex, the overall volume of impacts can be higher from the antapex direction due to the relative orbital geometry [19]. For planets like Earth, this is the trailing
Studies of Saturn's satellites suggest that large craters (e.g., >20 km on Rhea) show clear apex-antapex asymmetry, while smaller craters do not, potentially indicating different populations of impactors (heliocentric vs. planetocentric) [1, 21]. 3. Observational Data and Parallax Earth is more likely to encounter ISOs during
In any system of motion, the is the "forward" direction and the antapex is the "rearward" direction.
The antapex is a baseline for measuring large-scale cosmic shifts.