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" ... 5.) Our modern space program spread Earth-based life to Mars. And, finally, perhaps Mars truly was a barren, lifeless planet — at least for billions of years — until the dawn of the space age. Perhaps spaceborne materials that weren’t 100% decontaminated or sterilized landed on the Martian surface, bringing modern Earth organisms with them as stowaways. ... "
" ... Although the next generation of 30- to 40-meter ground-based telescopes will have an advantage over any single spaceborne telescope, says Beichman, eventually, the angular resolution of a spaceborne flotilla of telescopes may be essential to look for biomarkers on nearby planets in so-called habitable zones. ... "
" ... From its spaceborne environment, all components must then properly deploy. ... "
" ... If we restrict ourselves to current rocket technology, it will take tens of thousands of years — at minimum — to complete a journey from Earth to the nearest solar system beyond our own. But enormous advances in propulsion technologies are within reach, and could reduce that journey to within a single human lifetime. If we can master the use of nuclear fuel, of spaceborne laser arrays, of antimatter, or even of dark matter, we could realize our dream of becoming a spacefaring civilization without invoking physics-breaking technologies such as warp drive. ... "