Tagged: weightlessness

Lrrking in low orbit

Last Monday, a SpaceX rocket lifted off from the Florida peninsular on route to the International Space Station.

On board that craft was an experiment that could have big implications for Parkinson’s disease. It involves a Parkinson’s-associated protein called Leucine-rich repeat kinase 2 (or LRRK2).

In today’s post, we will discuss why we needed to send this protein into orbit.


The International Space Station. Source: NASA

When you look up at the sky tonight – if you look for long enough – you may well see a bright little object hurtling across the sky (Click here to learn more about how to track the International Space Station). Know that inside that bright little object passing over you there is currently some Parkinson’s disease-related research being conducted.

What is the International Space Station?

The International Space Station (or the ISS) is the largest human-made object that we have ever put into space. It is so big in fact that you can see it with the naked eye from Earth.

(How’s that for exciting viewing?)

The current space station is 73.3 metres (240 feet) long and 44.5 metres (146 feet) wide, weighing approximately 420 tonnes (924,740 lb), and it has been continuously occupied for 16 years and 289 days, making it the longest continuous human presence in low Earth orbit. The ISS travels at a speed of 7.67 km/second, maintains an altitude of between 330 and 435 km (205 and 270 mi), and completes 15.54 orbits per day (it has made over 102,000 orbits!).

The size of the the ISS compared to a Boeing Jumbo jet. Source: Reddit

First approved by President Ronald Reagan in 1984, it was not until November 1998 that the first components of the International space station were first launched into orbit. 36 shuttle flights were made to help build the station. The first crew members took up residence on the 2nd November 2000, and the station was completed in 2011. There is always 6 crew members on board – the current team are Expedition 52 – and it has been visited by 220 astronauts, cosmonauts and space tourists from 17 different nations since the project began.

Oh yeah, and if you want to see what it looks like on board the ISS, in 2015 the European Space Agency provided an interactive tour and earlier this year Google Maps added an interactive tour of the ISS.

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