The 2011 Tohoku earthquake, which caused the tsunami behind the Fukushima Daiichi nuclear meltdown, disrupted more than man-made structures.
The European Space Agency’s GOCE satellite, measured a significant change in Earth’s gravity.
The Gravity Field and Steady-State Ocean Circulation Explorer, launched in 2009, collected data to map Earth’s gravity with unrivaled precision.
While we generally think of gravity as constant (an assumption well known to Physics 101 students), the force varies regionally due to uneven distribution of material deep within the earth.
Images via the European Space Agency.
Via Gizmodo.