Researchers believe they may be able to suss out whether microscopic aliens exist on one of Saturn's 83 moons without having to land a spaceship there.
Enceladus — about 800 million miles away and 25 times smaller than Earth — has captured the imaginations of planetary scientists searching for life beyond the blue marble. The Saturn moon shoots geyser-like plumes containing bits of water and gas from its ocean into space. That constant spray creates a halo, which contributes to one of...