Gaal was not certain whether the sun shone, or, for that matter, whether it was day or night. He was ashamed to ask. All the planet seemed to live beneath metal. The meal of which he had just partaken had been labelled luncheon, but there were many planets which lived a standard timescale that took no account of the perhaps inconvenient alternation of day and night. The rate of planetary turnings differed, and he did not know that of Trantor.
At first, he had eagerly followed the signs to the "Sun Room" and found it but a chamber for basking in artificial radiation. He lingered a moment or two, then returned to the Luxor's main lobby.
He said to the room clerk, "Where can I buy a ticket for a planetary tour?"
"Right here."
"When will it start?"
"You just missed it. Another one tomorrow. Buy a ticket now and we'll reserve a place for you."
"Oh." Tomorrow would be too late. He would have to be at the University tomorrow.
He said, "There wouldn't be an observation tower-or something? I mean, in the open air."
"Sure! Sell you a ticket for that, if you want. Better let me check if it's raining or not."...............
