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SpaceX to Make Starlink Satellites Dimmer to Lessen Impact on Astronomy

Future batches of the satellite will have a special coating to reduce their reflectivity

A Falcon 9 rocket launches a batch of Starlink satellites on Nov. 11, 2019.

SpaceX has a fix in play to make its bright Starlink satellites less disruptive to astronomy, according to a SpaceNews report

After the first Starlink internet satellites launched in May, astronomers noticed that the little satellites are quite reflective and bright. With SpaceX reporting it wants to put 42,000 of these satellites in the sky, astronomers were concerned about it washing out parts of the night sky.

So now the company plans to treat one of the Starlink satellites with a special coating, when the next group goes in late December, according to SpaceX president and chief operating officer Gwynne Shotwell. 


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Shotwell, in a conversation with SpaceNews and other reporters at SpaceX’s headquarters in Hawthorne, California, said that the company had not anticipated problems with reflective satellites.

“No one thought of this,” Shotwell said, according to SpaceNews. “We didn’t think of it. The astronomy community didn’t think of it.” But once reports came to SpaceX of the bright satellites, she added, the company began looking into fixes for the satellites.”

We want to make sure we do the right thing to make sure little kids can look through their telescope," she said in the SpaceNews report. “Astronomy is one of the few things that gets little kids excited about space.”

SpaceX currently has 120 satellites in its constellation (a second batch of 60 satellites launched in November), and plans to launch more in batches of 60 every two or three weeks in 2020. The constellation should be globally operational around the middle of next year, Shotwell said. 

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Elizabeth Howell (she/her), Ph.D., is a staff writer in the spaceflight channel since 2022 covering diversity, education and gaming as well. She was contributing writer for Space.com for 10 years before joining full-time.

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