NASA Astronauts are carrying out a spacewalk lasting more than 6 hours today to fix the International Space Station.

Drew Feustel and Ricky Arnold are going to change an unsuccessful cooling part and install a camera system and communications receiver on the outside of the craft.

The set formerly finished another six-hour walk on 29 March to set up cordless interactions antennas and repair a buggy cooling system.

It will be the 210th spacewalk at the ISS because 1998, and the 4th up until now this fiscal year.

Specifically, the pair will be switching out thermal control equipment that distributes ammonia to keep the station’s systems cool.

Whenever an astronaut gets out of an automobile while in area it’s called a spacewalk.

The first ever spacewalk was conducted by Russian cosmonaut Alexei Leonov on 18 March 1965 and lasted for 10 minutes.

American astronaut Ed White followed on 3 June 1965 and lasted 23 minutes.

The common spacewalk today takes place outside of the ISS and lasts between five and eight hours, depending on the job.

The astronauts use spacesuits which supply them with the oxygen they need to breathe and the water they need to consume, and put these on numerous hours prior to the walk.

While in their fits they breathe pure oxygen for a few hours, eliminating all the nitrogen in their body to avoid getting the bends – likewise typical among scuba divers.

When on a spacewalk, the astronauts are connected to their spacecraft to stop them drifting off into space and their tools are connected to their fits to stop them from drifting off too.

The genuine safety mechanism for astronauts is their SAFER knapsack, which represents Simplified Aid for Extra-vehicular activity Resure”.

SAFER uses small jet thrusters to let the astronauts move around in space and is managed with a little joystick.

Prior to entering into space, the astronauts train for spacewalks by swimming.

Astronauts practice spacewalks undersea in a big swimming pool called the Neutral Buoyancy Laboratory, or NBL near NASA’s Johnson Space Center in Houston, Texas.

The pool holds 6.2 million gallons of water and astronauts spend 7 hours training in the pool for every single hour they will invest in a spacewalk.