Shulou(Shulou.com)11/24 Report--

According to the news on September 1, with more and more satellites in low-Earth orbit, it is not just astronomers who are worried about this. Some planetary defense scientists and researchers are also worried that satellite networks will interfere with planetary defense mechanisms.

Apollo academic Research (Apollo Academic Surveys) and Kelly Nugent of the Olin Institute of Engineering in Massachusetts recently surveyed planetary defense experts on topics about near-Earth asteroids and comets. Of the 34 experts surveyed, all said they were a little worried that too many moons would affect the detection of near-Earth asteroids, and 24 percent of them expressed great concern.

"Studies have shown that low-Earth orbiting satellites can seriously affect observations at dusk, which is an important range for searching for near-Earth objects," one survey participant wrote. "

Another interviewee pointed out that the launch of a "large number of man-made satellites" could affect NASA's double asteroid redirection test (DART) planetary defense mission.

"I think it's terrible that no concrete measures have been taken to solve the problem," wrote Christina Thomas of the University of Northern Arizona. "the situation will only get worse, causing a lot of problems for ground exploration."

Fortunately, the space-based observation system is coming online. NASA hopes to launch space-based observation systems such as the NEO Surveyor space telescope in 2028 as the main means of monitoring near-Earth object threats in the future. "Space-based systems are the right way to monitor near-Earth objects, and the importance of ground observation equipment is declining," another survey participant wrote.

In addition, in ground observations, researchers may be able to develop software to filter out most of the interference from satellites, just as astronomical observers do.

Eric Christensen (Eric Christensen) of the University of Arizona said: "A well-designed survey project focusing on near-Earth objects can effectively prevent satellite trajectories from causing partial image loss." Christensen is the lead researcher of the Katarina Sky Survey, which is one of the two asteroid exploration programs that have found the most NEOs, according to NASA. "I estimate that a complete star chain satellite network may reduce the detection efficiency of Katarina's sky survey program by a few percentage points," he said. "

But Christensen also said that other celestial survey projects "may be more vulnerable to additional 'noise' from satellite trajectories."

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