How do spacecraft navigate in space ?

How do spacecraft navigate in space ?

paulshillito Rockets, Science, space 0 Comments

How does a space probe like Voyager 2, which was launched in 1977, visit the 4 outer planets and travel over 17 billion kilometres over 40 years with almost next to nothing in the way of fuel. By the time Voyager 2 had reached Neptune, it had swung by Jupiter, Saturn and Uranus, travelled 7 billion kilometres and was still within 100km of it’s target and all with mid 1970’s technology. In the movies space craft just seem to fly to where ever they want and get there in no time at all but in our version of reality its …

Robonauts or Men - Which Will Step Foot on Mars First ?

Robonauts or Men – Which Will Step Foot on Mars First ?

Admin Aerospace, computers, robotics, space, Technology 1 Comment

Mars will probably be the next giant leap for mankind – but it’s not certain that the feet that step onto it will belong to a man or woman. The development of the robonaut, humanoid robots to go to Mars in our place, is well underway. Some experts say they’re cheaper, safer and more effective than sending humans to the red planet. So will a living, breathing person ever set foot on Mars? It was difficult enough getting to the moon, 239,000 miles, or 385,000 kilometres away from Earth. That’s nothing, compared to the 34 million mile, or 55 million …

Why is the sun hot ?

Why is the Sun hot ?

Admin Science, space 0 Comments

Why is the sun hot?,  now before you jump on the comments and say “because it’s the sun, stupid” think about it, our sun is basically a giant nuclear reactor at the centre of our solar system but not like the ones on earth. They create energy by nuclear fission, that is they split large atoms like uranium into smaller lighter ones and in the process it releases large amount of energy. Atomic bombs also work in the same way which is why they are so destructive. The sun creates its energy by nuclear fusion, the most efficient way to …