▁in ▁ 1 9 8 9 ▁for ▁visit ing ▁Department ▁of ▁App lied ▁Mathemat ics ▁and ▁The oret ical ▁Physics ▁( D AM TP ) ▁Cambridge , ▁South am pton ▁University ▁( UK ), ▁Card iff ▁University ▁and ▁Queen ▁Mary ▁College , ▁London ▁under ▁the ▁Dist ingu ished ▁Scient ists ▁Exchange ▁Program ▁of ▁British ▁Council . ▁In ▁ 1 9 9 3 , ▁Joh ri ▁was ▁awarded ▁DA AD ▁Fellow ship ▁for ▁his ▁visit ing ▁assignment ▁at ▁The oret ical ▁Physics ▁Institute , ▁Johannes ▁G uten berg ▁University , ▁Main z ( G erm any ). ▁ ▁Joh ri ▁was ▁hon ored ▁with ▁a ▁' Sil ver ▁Pla que ' ▁by ▁Council ▁of ▁Science ▁& ▁Technology , ▁India ▁for ▁his ▁distinguished ▁work ▁on ▁Dark ▁Energy ▁in ▁the ▁year ▁ 2 0 0 6 . ▁He ▁was ▁Life ▁Member ▁of ▁Gan ita ▁Par ish ad ▁and ▁a ▁found ing ▁member ▁of ▁the ▁Indian ▁Association ▁of ▁General ▁Rel ativity ▁and ▁Gra v itation . ▁ ▁Writ ings ▁and ▁h obb ies ▁Besides ▁scientific ▁research ▁papers ▁and ▁popular ▁science ▁articles , ▁Joh ri ▁wrote ▁several ▁books ▁on ▁Mathemat ical ▁Physics ▁and ▁Ast ro physics . ▁His ▁research ▁mon ograph ▁Early ▁Un iverse ▁was ▁published ▁by ▁Had ron ic ▁Press ▁( USA ) ▁in ▁ 1 9 9 6 . ▁Vin od ▁Joh ri ▁loved ▁to ▁compose ▁vers es ▁in ▁H indi , ▁Ur du ▁and ▁English ▁during ▁his ▁le is ure ▁time . ▁ ▁Personal ▁life ▁Joh ri ▁was ▁married ▁to ▁Ar una ▁( ma iden