Idea of human
Idea of human.
Other experts have echoed Hawking's beliefs, although they give different reasons. They point out that we are rapidly exhausting the Earth's resources while the population continues to grow. 2. With nothing left in the larder, we shall all have to leave home, and there will be no return.
However, just how realistic is such a move? 3. Even the journey to Alpha Centauri, the nearest star beyond our sun, would take about 100000 years, as long as homo sapiens has walked the face of the Earth.
Clearly then, unless scientists come up with a way for us to travel faster than the speed of light, we shall have to look for alternative solutions. One idea, first proposed by scientist Gerald O'Neill in the 1970s, would be to construct gigantic aluminium tubes that would orbit the earth and provide wonderful living conditions for the inhabitants.