New Delhi, July 22 -- "The Earth looks completely one; no border is visible from outside"--these powerful words by Group Captain Shubhanshu Shukla, the first Indian to reach the International Space Station, are mentioned in a recently released Class 5 textbook by NCERT.

The quote, part of a conversation between Group Captain Shukla and then Prime Minister Narendra Modi, appears in the chapter Earth, "Our Shared Home" in the Environmental Studies book, "Our Wondrous World".

Recounting his experience of seeing Earth from space, Shukla said, "It seems that no border exists, no state exists, no countries exist. We all are part of humanity, and the Earth is our one home, and all of us are in it."

Shukla completed a landmark 18-day mission a...