PARIS — Space-traffic-monitoring startup LeoLabs has closed a $13-million Series A financing round led by WERU Investment and Airbus Ventures that will be used to enlarge its current two-site network of ground radars to monitor low Earth orbit.

California-based LeoLabs, formed in 2016 as a spinout of SRI International, which was an investor in LeoLabs’ earlier seed round, is building a business to track satellites and debris in low Earth orbit.

The company operates two radar installations, in Alaska and Texas, and plans to build . . .

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