Neil deGrasse Tyson wants to believe. He just needs to see the evidence first.
- Are UFOs actually alien spacecraft visiting Earth? They might be, says Neil deGrasse Tyson, but if you want to make that claim you better bring the evidence to support it.
- Eyewitness testimony is the lowest form of evidence. To measure what is true or not true in the world, we require data -- and when it comes to alien appearances, it's as astronomer Carl Sagan said: "Extraordinary claims require extraordinary evidence."
- So what can you do to prove your alien abduction story? Take selfies, live-stream video to the internet, and if you happen to find yourself in a spacecraft getting your "gonads poked", then grab an item from the alien lab as evidence before they release you back on Earth. Neil deGrasse Tyson wants to believe, but not until he sees the data.
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.
We still don't have proof of intelligent life beyond that on Earth.
- One of the biggest questions is whether we are alone in the universe — could there be other intelligent life, besides us, out there? Currently, we don't have any evidence aliens exist.
- There may have been a chance for a civilization to start billions of years before life began on Earth — one that is far more advanced, technologically speaking, than us. However, they're not making it very obvious. We have no proof of this.
- If such an advanced civilization exists, though, it probably relies on solar energy to fuels its everyday activities.
Two Apollo 11 astronauts question NASA's planetary safety procedures.
- Buzz Aldrin and Michael Collins revealed that there were deficiencies in NASA's safety procedures following the Apollo 11 mission.
- Moon landing astronauts were quarantined for 21 days.
- Earth could be contaminated with lunar bacteria.
- Oumuamua, a quarter-mile long asteroid tumbling through space, is Hawaiian for "scout", or "the first of many".
- It was given this name because it came from another solar system.
- Some claimed 'Oumuamua was an alien technology, but there's no actual evidence for that.