I thought I would share some interesting space-related information, since I don’t know if I can think of any more digital topics to rant on, at least for the moment. I hope you are at least intrigued by the following, even if astronomy/science isn’t your area of interest… 🙂
The Hertzsprung-Russell Diagram: This diagram, as you can see, charts the temperatures, luminosities (brightness), and sizes of different stars in our galaxy. This diagram is particularly useful in stellar astrophysics, in helping to categorize and better understand the stars and star systems which are being studied (including our own star!!)
This image is of the Hubble Ultra Deep Field, the deepest image of the Universe to date.
This is a map configured over the course of many years by scientists of the known Universe from our perspective. There are over 50,000 galaxies charted here. (If you think that is a large number, it is thought that there are hundreds of billions of galaxies in the Universe, and to blow your mind even more, hundreds of billions of stars in each of those galaxies. Imagine how many stars and star systems there are in the entire Universe. Is your head spinning yet?) 🙂
This photograph is based on the theory of space-time as a dimension. Each object, due to the force of gravity (so it is thought) sits in its own slightly warped nest in space and time. Supermassive black holes have enough gravity, however, to truly indent the dimension of space time. Time literally slows down close to a black hole, and once something is inside the black hole, in a sense, (it is thought) it is no longer really in our universe. As well, nothing, not even light, can escape a black hole (thus where it obtained its name).
Here is a digitally enhanced image of a supernova. A supernova is the death of a massive star, which has used up all of its fuel for nuclear fusion. It is thought that our sun is actually a second (or third) generation star, and that our solar system was actually formed from the supernova of the star that existed here prior to the sun. Some even more massive stars will collapse into a black hole. Our sun will merely expand once it has used up its fuel, before retracting into a white dwarf star, while other, more recently discovered stars known as brown dwarfs (which would fall at the bottom left of the HR diagram) will (and have) trudge on for possibly trillions of years. Their sizes are so small, temperatures so low, and luminosities so low, that they use up their ‘fuel’ at a very slow rate.