The Science of Star Trek 29 years old

How real is the 'science' in Star Trek?

Credits

Name	Character
Avery Brooks He was 46, now 76 years old	as Himself
Colm Meaney He was 41, now 71 years old	as Himself
Stephen Hawking He was 53, 76 years old when he died	as Himself
Leonard Nimoy He was 63, 83 years old when he died	as Himself
Robert Picardo He was 41, now 71 years old	as Himself
Bill Kurtis He was 54, now 84 years old	as Himself

Name	Department