As the report authors point out, even near-misses might lead to the "creation of a burdensome regulatory framework and affect the future disposition of science CubeSats.

2019年6月六级真题（第三套）阅读 Section B

But over the past few decades a unique class of satellites has been created that fits the bill: CubeSats.

2019年6月六级真题（第三套）阅读 Section B

But they can attain more distant orbits; NASA plans for most of its future Earth-escaping payloads to the moon and Mars especially to carry CubeSats.

2019年6月六级真题（第三套）阅读 Section B

Currently, there aren't many CubeSats and they're tracked closely.

2019年6月六级真题（第三套）阅读 Section B

For instance, a research group here at Arizona State University recently claimed their developmental small CubeSats could cost as little as $3, 000 to put in orbit.

2019年6月六级真题（第三套）阅读 Section B

since then, NASA, the National Reconnaissance Office and even Boeing have all launched and operated CubeSats.

2019年6月六级真题（第三套）阅读 Section B

This is where a culture of social responsibility around CubeSats becomes important 一 not simply to ensure that physical risks are minimized, but to engage with a much larger community in anticipating and managing less obvious consequences of the technolog

2019年6月六级真题（第三套）阅读 Section B

Yet it also acknowledges that widespread deployment of LEO CubeSats isn't risk-free.

2019年6月六级真题（第三套）阅读 Section B