अंतरिक्ष : राजीव सक्सेना द्वारा हिंदी पीडीऍफ़ पुस्तक – विज्ञान | Antariksha : by Rajiv Saxena Hindi PDF Book – Science (Vigyan)
Pustak Ka Vivaran : Kaphi samay se yah janne ke prayas kie ja rahe hai ki hamara brahmand kya hai aur kaisa hai? halaki antariksh vigyan ne pichhle kuchh varsho mein kaphi unnati ki hai. Anek upagrah antariksh mein sthapit kie ja chuke hai, kai baar chandrama ki yatraen ki ja chuki hai, shaktishali rediyo durabinen banai ja chuki hai. Lekin to bhi brahmand hamare lie rahasyamay bana hua hai…………
Description about eBook : For a long time, efforts are being made to know what is our universe and how is it? However, space science has made great progress in the last few years. Many satellites have been set up in space, many times the moon has been traveled, powerful radio telescopes have been created. But even then the universe remains mysterious for us……………..