A satellite screw-up reaffirms Einstein’s theory of gravity
Incorrect orbits let scientists test how clocks change speed in a gravitational field
![European Galileo network](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/12/120718_EC_satellite-screwup_main.jpg?fit=860%2C460&ssl=1)
SATELLITE SNAFU Two satellites of the European Galileo network (one illustrated) were launched in incorrect orbits, a mistake that allowed scientists to test Einstein’s theory of gravity.
ESA