Science News Roundup: US space startups' latest struggles marked by layoffs, shake-ups

Following is a summary of current science news briefs.

US space startups' latest struggles marked by layoffs, shake-ups

U.S. space startups have slashed workforces and restructured operations to survive amid an investment drought that has grounded once-lofty aspirations. While more established players like Elon Musk's SpaceX and Jeff Bezos' Blue Origin spend billions on new, bigger rockets, rocket startup Astra Space, satellite imagery firm Planet Labs and privately held engine maker Ursa Major recently laid off workers to cut costs.

(With inputs from agencies.)