two major ways to do that:kewkew34 wrote:Okay, so obviously I am not going to go into a huge amount of detail with my 5 and 4 year old girls. But as I was reading parts of the book The Sun by Seymour Simon, some questions popped into my head.
If we can't actually travel to the sun how in the world do they know the make up of the sun? You know, the core, the radiative zone, the convective zone, etc.
1. probes and satellites. to learn more, do some research about solar space missions. plenty of those since 1959 and still being done currently. find out about what NASA does and what SOHO is.
I make sense of it like this. the author of the children's book simplified the information. the photons still move at the speed of light, but they are moving in extremely dense material so saying it is slowed down is a relative way to understand it. the millions of years that you emphasis added.. I just know it takes longer, but not sure how it would be observably measured.kewkew34 wrote:And how do you make sense of this:
"Around the core are two layers, the radiative zone and the convective zone, which make up most of the sun's interior. Here X rays from the core move outward toward the surface. Normally, these rays move at the speed of light-186,000 miles per second. But inside the sun, X rays are greatly slowed down by the tightly packed gases. It takes an X ray millions of years to reach the sun's surface." (emphasis added)