The wobbling orbit of a pulsar proves Einstein right, yet again
New observations of ‘frame dragging’ help reveal details of the final days of a pair of stars
![white dwarf illustration](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/01/012920_cc_pulsar-einstiein_feat.jpg?fit=1028%2C579&ssl=1)
A white dwarf (illustrated, center) twists spacetime as it spins, forcing the orbit (pink) of a neighboring pulsar (illustrated with radio jets) to wobble.
Mark Myers/ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav)