Brightside Crossing by Alan E. Nourse (Galaxy, January 1956)1 opens in James Baron’s club, with him meeting an unknown man who asks if he is planning a Brightside Crossing. We learn in fairly short order that (a) Baron’s crossing will be across the sunward facing side of Mercury2 when it is at its closest point to the sun (perihelion) and (b) the stranger is Peter Claney, the only survivor of an earlier failed attempt. Claney insists that Baron has no chance of making a successful crossing, and proceeds to tell Baron about his team’s failed attempt.
In the central part of the story we learn how Claney was approached by a Major Tom Mikuta to join the expedition and how they were later joined by two other men, Jack Stone and Ted McIvers. The latter man, an adventurer described by Claney as a “kind of a daredevil”, arrives late at their start point—a lab in the twilight zone—presaging problems that will arise later in the story.
After they depart the base station, McIvers’ restlessness soon manifests itself and, after swapping roles with Stone and driving one of the flanking scout vehicles rather than the supply sledge at the back, he is soon asking to replace Claney as point, wanting to go five or ten miles ahead of the rest of the team to reconnoitre their route. Mikuta refuses, stating that they need to stay together, but McIver becomes ever more wayward and, during one of his side trips, he finds the wreckage and bodies of a previous expedition. Tensions increase as the story continues to unfold—the physical conditions are gruelling, Stone is becoming increasingly scared, and they are arguing about falling behind schedule. This all comes to a climax when Claney baulks at crossing a shelf he considers unsafe, and McIver charges ahead:
I started edging back down the ledge. I heard Mclvers swear; then I saw his Bug start to creep outward on the shelf. Not fast or reckless this time, but slowly, churning up dust in a gentle cloud behind him.
I just stared and felt the blood rushing in my head. It seemed so hot I could hardly breathe as he edged out beyond me, farther and farther—I think I felt it snap before I saw it. My own machine gave a sickening lurch and a long black crack appeared across the shelf—and widened. Then the ledge began to upend. I heard a scream as Mclvers’ Bug rose up and up and then crashed down into the crevasse in a thundering slide of rock and shattered metal.
They learn that McIvers isn’t dead but has smashed his vehicle and broken his leg. Mikuta and Stone descend into the crevasse to save him but (spoiler) are killed in a subsequent quake. Claney turns back.
The last part of the story, like the first, takes place in Baron’s club, and sees Baron (and probably most readers) observe that McIvers was the wrong kind of person to have in the team. Claney rebuts that, suggesting that McIvers was right to do what he did as they needed to keep to their schedule or they all would have died. Finally, after Claney makes an impassioned last attempt to talk Baron out of continuing his expedition, he asks him, “When do you leave, Baron? I want you to take me along.”
Although this story superficially looks like hard SF, it is really a character study about the type of men who are explorers, and how they are driven to do what they do.
This is a pretty good piece which is further improved by its closing line.
**** (Very Good). 7,850 words. Story link.
1. This story was a finalist for the 1956 Hugo Award for Best Novelette.
2. At the time the story was published it was thought that Mercury was tidally locked and that only one side of the planet faced the sun (i.e. Mercury rotated once for every orbit around the sun). Subsequently, Mercury was discovered to rotate three times for every two orbits, so all parts of the planet receive sunlight at some point.