Comic Title: Batman #140
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: June 1961
On Sale Date: April 13, 1961 Copyright Date April 13, 1961
Source: Library of Congress, Periodicals 1961

Frequency: Monthly, with the exception of Jan., May, July, and Nov.
Cover Price: $0.10
Page Count: 32
Editor: Jack Schiff

Title: "The Eighth Wonder of Space"
Pages: 9

Feature(s):
Batman (of Earth-1)

Penciller: Sheldon Moldoff
Inker: Charles Paris

Feature Character(s)

• Batman (last appearance in Batman #140; next appearance in World's Finest Comics #118)

Supporting Character(s)

• Robin (last appearance in Batman #140; next appearance in World's Finest Comics #118)
• Commissioner Gordon (last appearance in Batman #140; next appearance in Batman #141)
• Alfred Pennyworth (last appearance in Batman #135; next appearance in Batman #141)
• Batwoman (last appearance in World's Finest Comics #117; next appearance in Detective Comics #292)
• Ace the Bat-Hound (last appearance in Detective Comics #287; next appearance in Batman #143)

Villain(s)

• The Yellow Sweater Gang (no further appearances)

Other Character(s)

• Aliens from Xlur (no further appearances)

Synopsis:
Batman and Robin are transported to the planet Xlur by accident. The environment there causes their appearance to be changed into green-skinned aliens. When they return to Earth, they claim to be the real Dynamic Duo, but few believe them. They continue to fight crime and trap the Yellow Sweater Gang using their alien powers. Eventually their normal appearance returns and things return to normal.