The temperature in space is close to "absolute zero" because any object there will radiate heat until it cools to that point. This is for objects not exposed to direct sunlight. In Earth orbit, the...
Space suits provide a livable and portable environment for the occupant. This includes: A supply of air and water A mechanism to get rid of excess heat A propulsion systemSpace is not cold as many...
No one knows for sure. There are theories, but absolutely none of them can be proved, and I doubt we will ever find out. The universe is expanding firther into what was here before the big bang....