What is the most widely accepted scientific explanation for the Earth's initial massive tilt?

Answer

A colossal collision with a Mars-sized protoplanet

The initial foundational tilt is believed to stem from a catastrophic, oblique collision with a Mars-sized protoplanet early in the solar system's history.

What is the most widely accepted scientific explanation for the Earth's initial massive tilt?

#Videos

The Earths Tilt - YouTube

Earthplanetrotationtiltaxis