Thursday, March 7, 2019

6 Mar 2019 - Biosphere 2, Afternoon at the Pool!

6 Mar 2019

This morning we drove north of Tucson about 40 miles to the Biosphere 2 facility. 
In simple terms, the Biosphere 2 was originally designed as a completely closed ecological system to study the viability of human life colonizing outer space. It is a huge and complex research facility. It is self-contained and sealed air tight.  The experiments involved all the things required for sustaining life, like air, carbon dioxide, food, water, growing all sorts of plants, and the effects of those things working together (or not).

To do this they created seven 'biomes': a 20,000 sq ft rain forest; a 9,100 sq ft ocean complete with a coral reef and beach; a 4,800 sq ft mangrove wetlands;  a 14,000 sq ft savannah grassland; a 15,000 sq ft fog desert like what is in California; and two 27,000 sq ft agricultural biomes to grow food for the 'biospherians'.  Biosphere 2 also includes living quarters for the biospherians, laboratories, and other support areas. 

Biosphere 2 was built between 1987 and 1991 by Space Biosphere Ventures, a private conglomerate.  It's mission was a two-year closure experiment with a crew of eight humans "biospherians". It was only used twice for it's intended purpose.  Once for two years 1991-1993, and once from March to September 1994.  They ran into a plethora of problems with these experiments for various reasons.  During the second experiment the company actually dissolved.  Columbia University took it over in 1995 and used it to run experiments until 2003. In 2007 the University of Arizona in 2007 used it and then in 2011 took full ownership.  



So now Biosphere 2 is used by the University of Arizona to conduct experiments relating to our eco systems.  They offer 1-1/2 hour tours which is what we are on today.  After entering and paying a nominal fee, we had to walk down to where the Biosphere 2 is. 
They have a conference center here along with a cafe and lodging facilities.
 
The Biosphere 2 facility.  It is an amazing complex.

Some solar experiments on the walk down to the tour.

Different types of solar panels being tested


The viewing window where visitors or relatives could see the eight biospherians
while they lived in the Biosphere 2 for two years
A picture of the eight biospherians from 1991-1993

This is the main entrance door, which is an air interlock
since the whole facility has to remain completely air-tight sealed.
Now we are inside.  We waited about 30 minutes for the movie to start. 
In the mean time we looked over some displays on two floors and also got to see where the biospherians lived while they were inside for two years.
Each biospherian had their own 'apartment' space

There are many different laboratories including this one for the study of marine life

Their own medical facility where doctors kept frequent tabs on the health of the biospherians
 If you've seen the movie 'Martian' where Matt Damon was marooned on Mars and had to figure out how to grow food and live for a long time before her could be rescued.  This is similar to what they are studying here.


What a Martian biosphere might look like on the surface of the planet
This is the rain forest biome, complete with the plants and insects like ants that you would find in a rain forest.  It extends 90 feet in the air (in the dome):



Bamboo growing

The ocean biome, complete with beach, coral reef, waves, etc


The beach area

The coral reef
 The savannah grasslands transitional biome:


The fog desert biome:
Cactus








It's amazing the technology behind all of this.  The temperatures, humidity, carbon monoxide levels, oxygen levels, soil conditions, etc are all closely monitored.  To do this there are tens of thousands of probes and monitor devices all fed back to computer systems that make adjustments to the atmosphere.  



Underneath the fog desert biome is the equipment that controls everything such as airflow, waterflow, etc..  
Heat exchangers that extract water

Various tanks for water, condensate, etc

Our tour being briefed on the mechanical and electrical systems
 There has to be a flexible system to adapt to changing air pressures in the Biosphere 2.  There are actually two of them.  They call them 'lungs'. 

Heading into the 'south lung'

The tunnel heading into the lung

Inside the lung.  A huge flexible rubber-like membrane connected to a large metal disc

As the pressure increases, the metal disc rises.  As the pressure decreases, the metal disc falls.  The legs hanging down maintain clearance underneath 



This water source and pumps inside the lung are for fire suppression

A better picture of the metal disc with the water pool below and the legs hanging down

The 'water and life' agricultural biomes, where food is grown

Energy center produces power and temperature regulation for the Biosphere

More solar panels.  Note the plants growing below


Some new design solar systems that focus the sunlight

Was a great tour.  Very interesting knowing what they learn here will be applied in future outerspace living.
After touring the Biosphere 2 we returned to the RV park and enjoyed the warm, sunny afternoon at the pool!  First time this trip!



1 comment:

Unknown said...

Interesting tour! I had no idea that even existed. Neat piece of space research. Looks like a great day to sit by the pool. Relax and enjoy!