There is a science fiction art exhibit at the New York Academy of Sciences, curatted by Vincent Di Fate.

The whole exhibit is available as a slide show on the website.

FROM IMGANIATION TO REALITY
THE ART OF SCIENCE FICTION

http://www.nyas.org/snc/gallery.asp

Exhibit includes:
Vincent Di Fate
Michael Whelan
Paul Lehr
Richard Powers
Donato Giancola
Wayne Barlowe
John Schoenherr
And others

New York Academy of Sciences
2 East 63rd Street
New York, NY 10021
November 5 - January 28
Monday - Friday, 9:00am - 5:00pm