reserve to reverse his course and return to the asteroid, where he and Bigman defeat some of the pirates. As they leave the pirates' asteroid, they learn that a pirate fleet is attacking Ceres. Returning to Ceres, Starr realizes that the pirates' real object was to capture Hansen, which they have accomplished, and learns that Captain Anton's ship is taking Hansen to a secret Sirian base on Ganymede, whence the Sirians plan to attack Earth while Earth's fleet is occupied fighting the pirates in the Asteroid Belt. Although Anton has a 12-hour head start, Starr passes him to Ganymede by skimming the Shooting Starr past the Sun, wearing the Martian "Space Ranger" mask to ward off the heat and radiation. When Anton makes for Ganymede, Starr threatens to ram his ship, and accelerates toward it, all the while talking to Anton. The ships are ten miles apart when Hansen kills Anton and orders Anton's crew to surrender to Starr. When the Terran fleet arrives to take custody of the pirate ship, Starr convinces the commanding admiral to concentrate on the asteroid pirates and leave the Sirian base on Ganymede alone, revealing that Hansen is the leader of the asteroid pirates. It is then revealed that while Starr was intercepting Anton's ship, the Council of Science, on Starr's orders, captured the base and achieved the wherewithal to terminate the asteroid piracy. Hansen is coerced to have the Sirians leave Ganymede, and is sent to incarceration on Mercury. Afterwards, Starr reveals that the matter between him and Hansen was not just about the latter being the pirate mastermind, but a far more personal one. Hansen claimed to have met David's father, but didn't recognize his two close friends (despite the three being all but inseparable), and claimed that David resembles his father the most when he is angry, despite Lawrence hardly ever being in that state. From that, David states that within an hour after meeting Hansen, he knew he was facing not his father's acquaintance, but his parents' murderer. Reception Writing in The New York Times, Sidney Lohman praised Pirates as "grand science fiction for all ages." Reviewer Groff Conklin described the novel as "almost entirely conceived in the straight gee-whiz adventure technique that is the classical pattern for teenage adventure stories", and not as "cruel and bloody" as the first Lucky Starr book, so "Excellent for the Junior set". Astounding