Photos: Atlas 5 rolls out for launch

NASA’s Juno spacecraft, running on solar power more than 500 million miles from the sun, is on final approach for a Fourth of July arrival at Jupiter for a year-and-a-half campaign of exploration.

Preparing for its eighth launch of the year, the Atlas 5 rocket program has begun stacking the vehicle that will deploy a commercial satellite to provide Internet connectivity to rural America.

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.