41.   The idea that life did not exist on Mars became the prevailing view.

42.   The institute is a private organization conducting research to determine whether intelligent life exists beyond Earth.

43.   The new evidence certainly indicates that life existed on Mars billions of years ago, the McKay panel said.

44.   The prospect of lunar water does not mean life exists on the airless Moon.

45.   These discoveries have fueled speculation that life might exist elsewhere in the universe, though possibly in forms that would seem strange to ordinary humans.

46.   They are passionate about their vision that life exists elsewhere in the universe and may well be sending out radio signals.

47.   This evidence, they said, indicated that life might have existed on Mars in its first billion years.

48.   This, in turn, was seen as raising the likelihood that life exists elsewhere in the universe, perhaps even intelligent life.

49.   This evidence, in turn, should help scientists determine whether life ever existed on Mars.

50.   To the south of Chile is Antarctica, where no plant life exists.