I really enjoyed the opening post of this thread. My Nasa apps are the only apps beside the game apps I open everyday. With all the space news I am little disappointed in the direction of this thread. I was waiting for some time to post some about some cool stuff, maybe next time. Keep Looking Up! Was that captain kangaroo that said that?
@ Bio The theory is we evolved. Our bodies are far from perfect though. Examples: Many animals and plants make their own vitamin C but humans don't because our gene to make it is defective. We have an appendix which serves no purpose, but can kill us when it gets inflamed. There are more, but that's getting off topic.
Here's one that gives you an idea of how our solar system is actually moving in space. The time scale is sped up of course.
Where is that explained? Seems rather interesting and I haven't seen it. (Not questioning it, just intrigued)
Let's consider our galaxy a flat circle, and our planets are spread out through the x axis. I've never heard of our galaxy moving along the y axis, all together.
The GIF doesn't explain it, but everything is moving in space. The Earth around the Sun. The Sun around the Milky Way Galaxy. The Milky Way Galaxy moves inside the universe. "The planets in our solar system orbit around the sun. One orbit of the Earth takes one year. Meanwhile, our entire solar system orbits the center of the Milky Way galaxy. Our sun and solar system move at about 800 thousand kilometers an hour – that’s about 500 thousand miles an hour – in this huge orbit. So in 90 seconds, for example, we all move some 20,000 kilometers – or 12,500 miles – in orbit around the galaxy’s center. Our Milky Way galaxy is a big place. Even at this blazing speed, it takes the sun approximately 225-250 million years to complete one journey around the galaxy’s center. This amount of time – the time it takes us to orbit the center of the galaxy – is sometimes called a “cosmic year.” http://earthsky.org/space/milky-way-rotation
You post reminded me of a hypothesis I read once. When you look into a telescope, you're not only looking in space, you're looking back into time. You're seeing light that is many years old, depending on the distance of the object. Hypothetically, if you had a powerful enough telescope and could put it in the right spot in space, you could look back at the earth in time and see historical events occurring. You could watch Rome burning or Washington crossing the Delaware for example. It'd be like a time machine. Hypothetically, of course.
You'd just need to point to a mirror on that spot in space, reflecting light coming from the earth some time ago. In theory of course. Not that you'd be able to see a lot.
@Poppa We were having a nice discussion about astronomy and space. You did the trolling Bro. Play nice and I'll play nice.