David Christian: The history of our world in 18 minutes
 |
| Big Bang Expansion |
Original video.
 |
| Expansion of the Universe. |
Vocabulary list:
Threshold
- the starting point of an
experience, event. In other context – doorstep, verge.
Synthesis –
it is the combining of separate
elements or substances to form a “new whole”
Complexity
– it is the state of being complex (complicated)
Habitable
- suitable to live in: able to
sustain life
Fragile
– something that may be easily
broken, damaged, or destroyed;
Vulnerable
– easy to be wounded or harmed; defenceless
Stringent
– harsh, raw
 |
| Habitable zone. |
