The South Riding RV Travels

235

January 08th - Houston TX - Johnson Space Centre Museums

We headed north from Galveston about 40 miles towards Houston. There we visited the Johnson Space Centre which is where NASA controls all the space missions including those to the moon and those using the 'Shuttle'.
It was a fairly quiet day but there were still 85 people on our tour of Mission Control. This is it, the real thing, not a replica. It was empty because it was a Sunday and because there is no current mission to manage. The screens actually show the equivalent information for the Space Station which is managed from a similar control centre next door. This orbits the Earth every 90 minutes and has a Russian and an American on board at the moment.
The orbits are the white curves on the map and never exactly cross the same points on earth, so probably the lines are 90 minutes apart. The orbits are also never exactly the same height above the earth all the time, something to do with the technicalities of the space station being in 'free fall'. At this moment it was about 230 miles above the earth. They measure it in nautical miles (184.9) rather than the more common statute miles.
You might wonder (as we did) why they have so much liquid nitrogen. They use it to test that components can stand the intense cold of space.
There are several communication dishes around although NASA takes communication links from all over the world so that they can always be in touch with their spacecraft.
OK I just thought I fancied a pin up. I'm not sure who she is because there are several female astronauts. This is a wall sized picture as you enter the astronaut training centre (about 25ft high). So you get a good picture...
The astronaut training centre has exact operational replicas of all the bits of hardware they have to work with in space including, nowadays, all the Russian hardware. There are actually bits from almost a dozen countries as they work more and more on the space station.
Centre stage is a replica of the Shuttle, without its wings, which is a lot larger in reality than you might expect from the pictures. They spend a lot of time practicing loading and unloading the Shuttle.
This shot is of the front of the Shuttle load bay where the crane is mounted. The other bit is used for docking the Shuttle to the space station.
I don't think it is fitted with real engines but the tail section is pretty massive. There are main jets and manouevering jets.
The buildings don't actually look that spectacular from outside. Many just look like simple warehouses - admittedly they are eight stories high.
By contrast the news organisations which live here during missions have only simple 'portacabins' as their offices.
There are a couple of rockets in the park outside but these are much smaller than the massive powerhouses now used. There is usually a third, but it is currently being refurbished.
Inside is one of the Shuttle engines - just mix liquid oxygen with liquid hydrogen to make water and a 'lot' of thrust.
This is the inside of a Gemini capsule, so called because it carried two astronauts. It was the precursor to the Apollo series of flights. It is quite difficult to work out which way the men fitted in, but it is pretty snug in there.
This is a telescope module as fitted to the space station.
The Shuttle in launch mode with two external rocket boosters and the external fuel tank. It was external insulation of this fuel tank which fell off and damaged the Shuttle on the fatal flight which resulted in the death of seven astronauts and its subsequent grounding. They have now decided that they are better off without that bit of insulation but proving it will require several test flights.
This is the left hand seat (pilot) of the Shuttle. There is a right hand seat which looked just the same to me. But then I tried the simulator and crashed it twice, so what do I know?
Inside a model of the space station are astronaut models in all sorts of odd angles. (Since there is no gravity, there is no up or down, so they can be anywhere.) This one is having breakfast.
One of the dioramas is of the moon. You can just see the earth in the background.
They also have an original moon rover which was used for earth-bound training. It has four wheel drive (and steering). They are wondering if the batteries of the one on the moon will still be okay by the time they get back to it.
And behind a huge safe-like steel door is where they keep the largest exhibition of 'moon rocks' in the world. I could bore you with details of what this particular rock is but I didn't understand the words either.
Up on the ceiling is a model of the space station. I suspect that half the audience missed it completely. I thought the 'experience' bit was very over-priced and very American in style, but the tour round mission control was interesting. The shop is full of tacky things.