This book, Antariksha: Infinity Vol. 1, is the combination of three stories-ananta aloy (the space colony), abhijan (a trip to earth), and amrit (liquid of immortality). All three are science fiction-the first three part-vol. 1 of the science fiction series. The last three parts of Antariksha vol. 2-abastav (surreal), anabas (nonresidence), aparthiba (divine) are already published separately, published earlier than this vol 1 as they can be read separately. But it is better to read it as ananta aloy, abhijan, amrit, abastav, anabas, aparthiba. This is one unique fiction in world literature, pioneered in science fiction with space colony and space expedition with real science. It is the research work by the author over space science written in story format. The total research work has taken a time of fifteen years and has published in last six years. At AD 2500, the space colony boys are grown up at artificial atmosphere, communicating with earth boys to make visit to their unknown earth. The shape of earth has changed that time-one part was detached from earth by big bang at another star. And they make space expedition to one new satellite of Jupiter, where they get amrit, one rare type of liquid. In vol. 2, the boys become adults. Love has come within them. They heard one love fantasy from their storyteller friend. After repeated visits, they converged with the fantasy, and they detected and found the secret of the liquid. Then they found out that the new satellite of Jupiter is the part of earth. Everything is possible in the space of galaxies, clusters, and stars. Just imagine some of them after four hundred years.