Possible Clues:

• Moon of Mars
• Tramps on front of porch, one attracted by our neighbour
• Satellite of Mars
• Planetary moon's whirling hoops in which Beagle initially crashed?
• Belated comment about tramp's heavenly body
• Moon with hot surface, not all pale rings
• Satellite's top-of-the-range item to be put in position shortly
• Satellite picture's first seen by the homeless
• Cry 'oh', quietly over the moon
• Quietly tramps on moon