Hearing him suddenly bring this up, the iceberg-like girl understood clearly:
If Su Wen was not deliberately searching for a topic to avoid awkwardness, then perhaps he truly needed to think through the answer himself.
A faint light flickered in the girl's eyes. After a brief moment of thought, she gave an exceptionally rigorous and scientific explanation with clear logic:
"First, we would need to use the ecliptic coordinate system to determine right ascension and declination. Then, we could conduct trigonometric parallax observations using Earth's orbital path, combine them with astronomical ephemerides to calculate Mars's opposition, and determine the direction of its trajectory.
"First of all, "Our current latitude and longitude are already written very clearly on that sheet of paper by Old Constance.
"Second, the precise time can also be accurately determined through the phone's clock.
"After all, there is no distorted, all-encompassing wide-area magnetic field here for the time being, nor is there any profound time difference.
"If you wanted to use that thing in the distance that looks like a radio radar to measure the distance, you could record the round-trip duration of the electromagnetic pulse, convert it into the direct Earth-Mars distance, and then correct for atmospheric refraction errors.
"I don't think it would be difficult to lock onto Mars's exact position."
A faint smile rested on Su Wen's lips. He even unhurriedly raised his eyes toward a beam of heavenly light descending in the distance.
This time, he did not say whether her answer was right or wrong. He merely spoke calmly:
"Then what do you think?
"This beam of light piercing through the dusk before us—
"In the endless depths of space it is aimed toward, "Will its destination be Mars?"
The girl froze upon hearing that. Following his gaze toward the beam, she