Humanity began in Africa. But not all of us stayed there. For thousands of years our ancestors migrated and left across continents. And when they came to the sea, they built boats and sailed vast distances to islands they didn’t know were there. But why?
Probably for the same reason, when you look up at the moon or the stars and say, “What’s that over there? Can we go there maybe we can go there.
Of course, space is infinitely more hostile to human life than sea level. Escaping gravity takes far more work and costs than pushing off shore. However, these boats were state of the art at the time. Travelers carefully planned their expensive and dangerous voyages, many of whom died trying to discover what lay beyond the horizon. So why continue?
Talk about spin-off technologies ranging from small consumer goods to discoveries that could potentially feed millions of people, prevent fatal accidents, or save the lives of the sick and injured. I can. I’d say we shouldn’t keep all our eggs in this increasingly fragile basket: one good meteor strike and we’ll all join the non-bird dinosaurs.
Our first problem is take-off. Leaving Earth is a bit like divorce. They want to pack as little as possible and get it done quickly. But powerful forces, especially gravity, are plotting against you. For an object to fly freely over the Earth’s surface, it must launch and launch at speeds in excess of 40,000 km/h. This requires a lot of momentum and much more money than the momentum. The launch of the Mars Curiosity rover alone cost him nearly $200 million, about a tenth of the mission’s budget. Composite materials such as exotic metal alloys and fiber sheets can reduce weight. Combine this with a more efficient, high performance fuel blend and the booster will have a greater effect.
The Deep Space Network, a collection of antenna arrays located in California, Australia, and Spain, is the only navigation tool in space. Everything from satellites for student projects to the New Horizons probe snaking its way through the Kuiper Belt depends on maintaining heading. An ultra-precise atomic clock on Earth measures the time it takes for a signal to travel from the network to the spacecraft and back, which the navigator uses to determine the spacecraft’s position.
But as more missions fly, the network becomes congested. The switchboard is often busy. In the short term, NASA is working to reduce the load. The ship’s own atomic clock cuts the transmission time in half and allows range calculations over a single downlink. Lasers with higher bandwidth also handle large data packets such as photos and video messages.
Outside the safe cocoon of the Earth’s atmosphere and magnetic field, subatomic particles zip around at nearly the speed of light. It’s cosmic radiation and it’s deadly. Besides cancer, it can also cause cataracts and Alzheimer’s disease. When these particles collide with the aluminum atoms that make up the spacecraft’s hull, the nuclei explode, releasing even more ultra-fast particles called secondary radiation. “They actually make the problem worse,” said Nasser Barghouty, a physicist at NASA’s Marshall Space Flight Center.
Weightlessness destroys the body:
Certain immune cells are unable to function and red blood cells explode. It gives you kidney stones and makes your mind lazy.Astronauts on the ISS train to cope with muscle and bone loss, but in space we still lose bone mass, These zero-G spin cycles have not helped solve other problems. Artificial gravity solves it all. In his lab at MIT, former astronaut Lawrence Young tests a human centrifuge. The victim lies on a pedestal and steps on a stationary wheel while the entire device rotates. The resulting force pulls you in the same way gravity does, but it’s uncomfortable.
But Young’s machine is too small for more than an hour or two a day. A rotating spacecraft can be shaped like a dumbbell with two chambers he connected by a truss. Designers can become more ambitious as it becomes easier to send more mass into space, but they don’t have to reinvent the wheel.
As you can see we have a hard eggs to crack. It is not impossible but it will be hard for humans. We have to overcome these problems for our curiosity to the SPACE.