Archive for the ‘Science’ Category

An update on space


18 Aug

Not the whole of space, that would take ages but I’ll update you on NASA’s goings on as I haven’t mentioned the space programme in quite a while.

The last mission saw STS-127 blast off on the 15th of July at 6.03pm EDT and delivered the Kibo module to the ISS.

Endeavour set sail on its 23rd mission with the Kibo Japanese Experiment Module Exposed Facility and Experiment Logistics Module Exposed Section. The facility provides a type of “front porch” for experiments in the exposed environment, and a robotic arm that is attached to the Kibo Pressurized Module and is used to position experiments outside the station. The mission included five spacewalks.
Nasa.gov

The mission was classed as a total success and was completed with the wheels down of the shuttle on July 31st. Due the delays in getting the shuttle launched (thanks to both weather and technical reasons) the next mission to the the space station was very much in preparation when STS-127 landed.

STS-128 is scheduled for a August 24th Launch at 1.24am EDT, this mission will see Discovery launch on it’s 36th flight since it’s commissioning in 1984 and will see it deliver supplies and a new occupant to the ISS.

Discovery’s flight will deliver supplies and equipment to the International Space Station. Inside
the shuttle’s cargo bay is the Leonardo Multi-Purpose Logistics Module (MPLM), a pressurized
“moving van” that will be temporarily installed to the station. The module will deliver science
and storage racks, a freezer to store research samples, a new sleeping compartment and the
COLBERT treadmill. The 13-day mission will include three spacewalks to replace experiments
outside the European Space Agency’s Columbus laboratory, and install a new ammonia storage
tank and return the used one. Ammonia is used to move excess heat from inside the station
to the radiators located outside. Discovery also will deliver a new crew member and bring
back another after almost two months aboard the space station.
Nasa.gov

As this is a night launch, I will repeat what I have said a number of times before, if you can watch this one do… If you never watch another launch so be it, but night launches are something special to see. For the UK residents it’s not a bad time really with the launch at 6.24am BST.

There are also only a few shuttle missions left in the program now with the last targeted to launch on September 16th 2010. This will then lead the way for the Ares launch vehicles and the beginning of the Constellation program to return to the Moon and to go to Mars.

To watch coverage of the Launch on the 24th of August got http://www.nasa.gov/ntv
For more info on STS-127 or STS-128 head to http://www.nasa.gov/missions

A

Discovery set to launch tonight.


15 Mar

I am currently sitting here in Canada watching Nasa TV live on the internet. Space Shuttle Discovery is set to launch tonight to carry out STS 119. The mission, which is scheduled to last 14 days is Discoverys 36th mission and is set to deliver the final set of solar arrays to the International Space Station (ISS). Once the arrays are installed and operational the ISS will be running at 100% of it’s total power.

The launch is scheduled for 7.43pm EDT  (01.43 GMT) which I know for most of you is too late to watch but if you can stay up then do because a night launch is always a special thing to see.

A

Making a big bang


13 Sep

Unless you have been in a box or stranded on  desert island for the past week I am sure you will have heard about the big science experiment going on in Switzerland. You might not have realised that you heard about it, but you probably have.

Let me explain, there is a big science lab in Switzerland called CERN (originally called Conseil Européen pour la Recherche Nucléaire (European Council for Nuclear Research) but the labs were renamed in 1954 to Organisation Européenne pour la Recherche Nucléaire (European Organization for Nuclear Research) it was decided, however to keep the acronym.

This lab has had a colorful past, it is the location where Tim Berners-Lee OM invented the World Wide Web and many other scientific discovery were also made there. This Lab is also home to the Large Hadron Collider (LHC) which is the world’s largest and highest-energy particle accelerator complex. The collider is contained in a circular tunnel, with a circumference of 27 kilometres (17 mi), at a depth ranging from 50 to 175 metres underground.

Now this LHC is the centre of all the attention at the moment. Mainly because it was switched on for the 1st time on the 10th of this month. Ok Ok, I can hear you all now "but what does it do" I will try to explain as best I can without getting too technical.

The LHC as the name suggests collides things together,  it is intended to collide opposing beams of protons (one of several types of hadrons) with very high kinetic energy. Now a Hadron is a bound state of Quarks and a Quark is a type of physical particle that interacts via all four fundamental forces and that forms one of the two basic constituents of matter. Right that is as technical as I will get, now when those protons collide they will react with each other this, is what the scientists want to measure.

The "big bang" that started the universe was created by protons colliding (spot the correlation) so yes,they are attempting to recreate the "big bang". There is one small issue with the whole process, it has to be done at speed, the protons need to be moving pretty fast to create the same reaction. In-fact they need to be traveling at 99.999999% the speed of light when they collide. That is why they need such a long tunnel to go round before hitting each other. It takes time to get the protons to that speed too, they started the machine on September 10th but they won’t actually start colliding till October.

To give you an idea of how fast they will be traveling when they collide, 1 proton when at full speed will circulate the 27km pipe 11,000 times in a single SECOND!!! I don’t know about you but I cannot even begin to comprehend that sort of speed. Anyway when the proton hits that speed it will be directed directly into another one and all the reactions will be measured and recorded.

It is the single largest science experiment ever in terms of both physical size and monetary size (estimated €6.4billion) and for me it is one of the most exciting. To think that in just under 8 weeks we may well know exactly how the universe was created is astonishing. Ok it’s going to take a while to put all the data together but you get what I mean.

I will post some links below of Items for further reading.

Wikipedia

LHC, CERN, Tim Berners-Lee

How Stuff Works http://science.howstuffworks.com/large-hadron-collider.htm

Cern Website http://public.web.cern.ch/public/

 

When we know more I will post again on this topic.

 

A

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