Video: Juno’s countdown to Jupiter

NASA’s Juno spacecraft fine-tuned its orbit around Jupiter this week, helping steer the spinning space probe on a course to dip beneath the giant planet’s radiation belts in late August for the first time with all its science instruments activated.

Using a new, uprated main engine for the first time on a rocket of its kind, a United Launch Alliance Delta 4-Medium+ vehicle will soar into space Wednesday night carrying a $566 million Air Force communications satellite.

Alvaro Giménez Cañete manages the European Space Agency’s science program, a portfolio with a budget of nearly $600 million this year, and he recently spoke with Spaceflight Now about Europe’s hopes to build a gravitational wave observatory, the ExoMars mission to Mars, and tagging along with NASA’s probe to Jupiter’s moon Europa.