Partie 1 : À l′échelle du monde
Chapitre 1 : The universe
Space, page 8
| infinity |
| the void |
| weightlessness |
| gravity |
| gravitation |
| a light year |
| a shooting star |
| the Milky Way |
| the Pole Star, the North Star |
| to wax |
| to wane |
| to complete an orbit |
Halley’s comet is clearly visible to the naked eye from Earth. It takes the comet 75 to 76 years to complete an orbit around the Sun.
Solids, page 8
| ore |
| iron |
| rust |
| lead |
| flint |
| marble |
| slate |
| limestone |
| peat |
| clay |
| tough |
| crumbly |
Silicon Valley is named after silicon, which is used to create most semiconductors.
Light and darkness, page 8
| a ray of light, a beam of light |
| in broad daylight |
| bright |
| to dazzle |
| to twinkle |
| to glitter |
| to sparkle |
| to flash |
| a glow |
| a glimmer |
| faint |
| dim |
| the shadow |
| the shade |
It’s better to light a candle than curse the darkness.
Nothing can dim the light which shines from within.
Food for thought, page 9
The problem of the origin of the universe is a bit like the old question: Which came first, the chicken, or the egg. In other words, what agency created the universe. And what created that agency. Or perhaps, the universe, or the agency that created it, existed forever, and didn’t need to be created. Up to recently, scientists have tended to shy away from such questions, feeling that they belonged to metaphysics or religion, rather than to science. However, in the last few years, it has emerged that the Laws of Science may hold even at the beginning of the universe. In that case, the universe could be self-contained, and determined completely by the Laws of Science.