Time travelers
Time-travel is still practically impossible unless you have a little imagination.
We spent our lesson this week investigating a way to watch history unfold …
We looked at distances in light years. Because a light year is the distance light travels in one year, this tells us how many years it takes for the light to reach us from another object, and vice versa. We discovered what we would see happening on earth if we were located on different objects in space (and had very powerful, magical telescopes). We went further and further away until we could see complex life evolving on earth!
As we looked at more and more distant objects, we got a peak into some of the content we will investigate in the next couple weeks. We will be looking at the life cycle of a star, beginning with star formation and reaching star "ghosts" just in time for Halloween.
