'They are essential': How smoke detectors are evolving

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The Super Heavy booster managed to return to its launchpad roughly seven minutes after lift-off as planned, prompting an eruption of applause from ground control teams.

Ранее Глейхенгауз рассказал о настроении Петросян после возвращения с Олимпиады. По словам специалиста, спортсменка в хорошем настроении.

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But some question whether this expensive technology is worth it.