mars, organic, building blocks, evidence, water, chemistry, hunt, rover, planet, rocks, clues, life forms, microscopic

signals, radio, beacon, telescopes, life, intelligent, universe, outer space, life forms

Curiosity, Mars rover, NASA, car-sized, searc, life, water, life forms, martian, crater, soil, olympics, medals, hurdles, long jump, science, space, solar system

Planets, intelligent life, search for planets earth-like, habitable planets, NASA, aliens, ufo ufos, space, outerspace, cosmos, universe, other worlds, plants, humans, congress, gridloch, senate, house, impasse partisan

NASA, ET, Alien life forms, extra-terrestrial, outer space, intelligent life, space exploration