Comic Title: Challengers of the Unknown #7
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Apr/May 1959
On Sale Date: February 17, 1959 Copyright Date February 17, 1959
Source: Library of Congress, Periodicals 1959

Frequency: Bi-monthly
Cover Price: $0.10
Page Count: 32
Editor: Jack Schiff

Title: "The Beasts from Planet 9"
Pages: 13

Feature(s):
Challengers of the Unknown (of Earth-1)

Writer/Penciller: Jack Kirby
Inker: Wallace Wood

Reprinted In:
Challengers of the Unknown Archives Vol. 2 HC (2004)
Showcase Presents Challengers of the Unknown Vol. 1 TPB (2006)
Challengers of the Unknown Omnibus HC (2012)
Challengers of the Unknown by Jack Kirby TPB (2018)

Feature Character(s)

• Challengers of the Unknown (last appearance in Justice League of America #144; next appearance in Challengers of the Unknown #7)
• Ace Morgan (last appearance in Justice League of America #144; next appearance in Challengers of the Unknown #7)
• Rocky Davis (last appearance in Justice League of America #144; next appearance in Challengers of the Unknown #7)
• Red Ryan (last appearance in Justice League of America #144; next appearance in Challengers of the Unknown #7)
• Prof. Haley (last appearance in Justice League of America #144; next appearance in Challengers of the Unknown #7)

Villain(s)

• Three alien beasts (no further appearances)

Other Character(s)

• Carver (an archaeologist; no further appearances)
• Two aliens from Pluto (no further appearances)

Synopsis:
When an archaeologist discovers a crashed alien ship on Druid Island, he summons the Challengers of the Unknown. The Challs discover that the ship contain beasts for an alien zoo, and that the creatures have escaped. Ace and Red tangle with a flame-breathing giant bird, while Rocky and Prof handle an aquatic beast that destroys ships. Following their successful recapture of the creatures, they team-up to handle the last beast. Later, two aliens land and take the creatures back to their own planet.