New data fuel debate on universe’s expansion rate
Quasar observations support higher value for Hubble constant
![five quasars](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/02/020217_ec_Hubble-constant_main_free.jpg?fit=860%2C460&ssl=1)
TWINKLING LIGHTS Five quasars, shown, helped scientists make a new measurement of the universe’s expansion rate.
ESA/Hubble, NASA, Suyu et al.