11.   The encounter with the Jovian moon will occur more than four months after scientists announced their discovery of evidence that primitive life once may have existed on Mars.

12.   The ring is formed by volcanic emissions from the Jovian moon called Io.

13.   Their eagerness to keep Galileo going has been fed by its most recent observations, especially those revealing the four largest Jovian moons to be spectacularly diverse worlds.

14.   There were stunning new photographs of a Jovian moon.

15.   They looked amazingly like drugstore enlargements of Jovian moon photos released twice last year.

16.   This innermost of the large Jovian moons is being pulled first one way and then the other in a gravitational tug-of-war between Jupiter and neighboring moons.

17.   Io is one of four Jovian moons discovered by Italian astronomer Galileo Galilei, one of the first astronomers to study the heavens with a telescope.

18.   The Europa mission has a high interest and support because early studies suggests that the Jovian moon has an ice-capped ocean.

19.   There is high interest and support for the Europa mission because early studies suggest that its Jovian moon has an ice-capped ocean.