How did Cassini-Huygens reach to saturn? || How an astronauts work?

 Welcome, here you read about astronauts and also Cassini-Huygens . 

Exploring space

When you're trying to imagine the vastness of space, consider that Voyager 1, more than 30 years after it was launched, is just reaching the outer edges of our solar system. Space exploration is just beginning.

Q.How long did it takes Cassini-Huygens to reach Saturn?

Ans. Almost seven years.

As the crow flies?

Spacecraft launched from Earth do not necessarily travel to their destination in a straight line. The Cassini-Huygens orbiter and probe, for example, took a roundabout route during its mission to Saturn in order to make use of gravity assists.

The communications dish doubles as a sunshade to prevent overheating. The main engines and rocket thruster clusters allow for steering and speed adjustments.

What is a gravity assist?

By flying past a planet and making use of its gravity to change speed and direction, a gravity assist helps spacecraft on their way. Cassini-Huygens travelled twice past Venus, once past Earth, and once past Jupiter before it headed for Saturn.

By any other name.

Astronaut comes from two Greek words: astron, meaning star and nautes, meaning sailor. Russian astronauts are called cosmonauts (from the Greek words kosmos, meaning universe, and nature, meaning sailor). Chinese astronauts are called ' yuhangyuan' - literally "universe travel worker" or "space navigator".

Astronaut in training

Astronauts do not just climb into a spacecraft and zip off into space - they need months of study and training first. They have to be in peak physical condition, and some astronauts claim their training is much harder than any mission.

Q.How long is a NASA astronauts's training?

Ans.Astronauts have a year of basic training ,plus advanced training for missions.

Whatever it takes

Astronauts train for all sorts of situations. When necessary, they use real aircraft, equipment simulators, virtual reality systems, and computer simulations.

Underwater training

Floating in water is very like floating in space, so astronauts use special water tanks to train for space walks. One NASA tank can hold a full size replica of the space shuttle's payload bay.

Around and around

A multi-axis trainer helps astronauts get used to the out-of-control spinning feeling they'll get from tumbling in weightless conditions.

Walking on the moon

At the NASA Lunar Landing Research Facility at Hampton, Virginia, USA, moon walking practice involves suspending the astronaut by heavy cables.

Weightless wonder

Flown in a special way, an aeroplane with no seats and padded walls helps astronauts get used to feeling weightless. This plane is known as the vomit comet' because its motion makes people feel sick.

What's in suitcase?

Just like you pack to go on holiday, astronauts pack lots of things to take into space. They wear different clothes depending on what they are doing.

Launch and entry suit - the suit has a built-in life jacket. A parachute is strapped to the back of the suit. they have many pockets in that pockets signal mirrors, motion sickness, survival radio,exposure mitten ,they also kept chemical lights,flare kit ,strobe light,knife or cutter.

Ready to go

During launch and re-entry, astronauts wear a special bright orange suit, called a "pumpkin suit". Tools are stored in huge pockets on the legs.

A peek underneath

For a spacewalk, astronauts need to wear an extravehicular mobility unit, or EMU. Underneath this, astronauts wear space underwear, a one-piece suit with small, water-carrying tubes that help keep them cool.

Under the helmet, there's a communications cap, called a "Snoopy" cap, that has a headphone and microphone,

§  A safe journey Astronauts carry safety equipment in case of emergency.

§  Life raft This is used if the crew have to crash land at sea.

§  Sea dye This is used to colour water after an emergency landing to alert rescuers.

§  Drink Astronauts must sip fluid regularly to prevent dehydration.

§  Chemical light Astronauts carry lightsticks with them in the pocket of their suit.

Chill-out time

In space, astronauts wear clothes they would wear on earth, such as shorts and a T-shirt. Clothes are not changed as often as they would be on Earth after all, there are no washing machines on board a space station!

Just popping out

Extravehicular mobility units, or EMUS, are a bit like miniature spaceships. They provide astronauts with all they need to survive. They are used for working outside the space shuttle, and on the International Space Station.

Q. How long EMU can support an astronaut working in space?  

Ans. For about 8 half hours.                                                               

                                                              Thanks for viewing!