Isar Aerospace's two-stage Spectrum launch vehicle.

German launch vehicle developer Isar Aerospace announced March 28 it raised $165 million to scale up production of its Spectrum rocket scheduled to make its first flight later this year.

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Jeff Foust has more than a decade of experience writing about space policy, entrepreneurial ventures and regulatory affairs. In 2001, he established spacetoday.net to aggregate and summarize the day's space-related news stories. In 2003, he started The...