If the United States commits to the goal of reaching Mars, it will almost certainly do so in reaction to the progress of other nations - as was the case with NASA, the Apollo program, and the project that became the International Space Station.
Interpretation
The quote emphasizes that the U.S. space exploration efforts are often motivated by competition and progress made by other nations.
Neil Degrasse Tyson's quote suggests that the pursuit of ambitious goals, such as reaching Mars, is typically driven by a response to the advancements made by international competitors. Historically, the United States' achievements in space exploration, including the Apollo program and the development of the International Space Station, were catalyzed by the need to respond to the technological developments of other countries. This underscores the importance of competition in pushing the boundaries of innovation and exploration.
In practice
In a speech about future space missions, one might quote Tyson to emphasize the need for national commitment to space exploration.
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