Titan’s Kiss Saturn’s two largest moons meet in the sky in a rare embrace. Smog-enshrouded Titan (5,150 kilometers, or 3,200 miles across) glows to the left of airless Rhea (1,528 kilometers, or 949 miles across). Credit: NASA/JPL/Space Science Institute

Titan’s Kiss Saturn’s two largest moons meet in the sky in a rare embrace. Smog-enshrouded Titan (5,150 kilometers, or 3,200 miles across) glows to the left of airless Rhea (1,528 kilometers, or 949 miles across). Credit: NASA/JPL/Space Science Institute

Titan’s Kiss Saturn’s two largest moons meet in the sky in a rare embrace. Smog-enshrouded