When it comes time for humanity to pick a new home, where will we go?
- Regardless of whether you think the Earth will suffer some catastrophe or not, most individuals believe that humanity will eventually have to live on another planet.
- There is no nearby planet that can support human life, however; we'll have to pick a good candidate and terraform it.
- Each celestial body presents its own unique challenges and requirements. Some need more carbon dioxide, others need less; some would become water worlds, others more Earth-like; and so on.
NASA's intrepid Curiosity rolls upward into Mars history.
- Curiosity is exploring an exposed cross-section of Mars' early history within the unusual Gale Crater.
- Intriguing salt deposits indicate briny bodies of water appearing and disappearing over time.
- Curiosity is digging through Mar's past in search of environments that could have supported microscopic life.
The billionaires are both looking to the stars, but each has a different dream for space colonization.
- The billionaires Jeff Bezos and Elon Musk are driving the private space sector, however, they both have different motivations and goals for doing so.
- For Musk, space colonization is a matter of saving the human species — having a Plan B. For Bezos, he believes Earth can be saved and transformed into a "residential only" zone. Goods from industrial manufacturing would be outsourced from space colonies.
- One big concern regarding Bezos' plan is whether his company's presence in space would someday constitute a monopoly of extraterrestrial industry.
One of the scientists with the Viking missions says yes.
- A former NASA consultant believe his experiments on the Viking 1 and 2 landers proved the existence of living microorganisms on Mars.
- Because of other conflicting data, his experiments' results have been largely discarded.
- Though other subsequent evidence supports their findings, he says NASA has been frustratingly disinterested in following up.
A NASA robot on Mars sends back unusual findings, including timed magnetic pulses.