We All Need Our “Space”/Week 8/Joseph Racca

It’s true, we all really do need our space.  As in the video we viewed in lecture, ’space,’ on the minute scale (i.e. the rooms in a house) can simply be a few feet.  For instance when someone says, “I need my space,” what is expected of you is that you let them have their distance, or a specific amount of space.  We sometimes let that distance of space grow and sometimes we take it back. So, expansion of space as well as the destruction of space.  Scientists have been focusing on both, although both are still are left misunderstood.

The Mysteries of Space

What is this a picture of?  Can you possibly make a guess as to what these shapes represent?  Initially, these shapes, the sphere, the half-cylindrical shape, and the flat plane, look just as they are called, shapes.  But these shapes are the ways in which scientists view the universe:

“The density of the universe also determines its geometry. If the density of the universe exceeds the critical density, then the geometry of space is closed and positively curved like the surface of a sphere. This implies that initially parallel photon paths converge slowly, eventually cross, and return back to their starting point (if the universe lasts long enough). If the density of the universe is less than the critical density, then the geometry of space is open, negatively curved like the surface of a saddle. If the density of the universe exactly equals the critical density, then the geometry of the universe is flat like a sheet of paper. Thus, there is a direct link between the geometry of the universe and its fate.

The simplest version of the inflationary theory, an extension of the Big Bang theory, predicts that the density of the universe is very close to the critical density, and that the geometry of the universe is flat, like a sheet of paper. That is the result confirmed by the WMAP science.”

Expansion of the Universe

Space, like the depths of earth’s deep blue oceans, is for the most part, still a vast majority of unexplored ’space.’  Space has become a subject for many artists, for example the picture below is an artist’s representation of the death of the universe.  It shows space consuming itself but when looking at a black hole and the fact that what it sucks in disappears forever, it poses the question “Where does everything go?”  Do the objects consumed by the black hole vanish into nothingness or are they simply moved to a new space?

Death of the Universe

Scientists from the National Aeronautics and Space Administration (NASA) continue to unravel the mysteries of the workings of space:

The shape of the universe is determined by a struggle between the momentum of expansion and the pull of gravity.  If the density of the universe is less than the “critical density” which is proportional to the square of the Hubble constant, then the universe will expand forever.  If the density of the universe is greater than the “critical density”, then gravity will eventually win and the universe will collapse back on itself, the so called “Big Crunch”.”

In Robert Roy Britt’s article, “Top 10 Space Mysteries for 2003,” Britt lists the top ten mysteries of space.  It must have been difficult for Britt to choose because there are a lot more than ten mysteries of space and still many things left to be discovered.  Now will that day when we do discover all space has to offer come before it’s too late and the universe has killed itself or will it come in the days of space expansion?

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