guide to the universe volume-1

INDEX1.WHAT IS SPACE?2.PARTS OF A SPACECRAFT3.PLANET X4.K2-18B:THE OTHER EARTH.5.BLACK HOLES6.ARE WHITEHOLES REAL?7.ANTIMATTER...

Saindhab BeraMy name is Saindhab Bera. I study in Birla High School-Mukundapur(kolkata). I love reading and writing about space. I have my own research group Space X Time.