9.4 km/s and additional 1.5-1.6 km/s are used on aerodynamic and gravitational losses, however, the third stage which can launch a payload into orbit at an altitude of 500 km to 1000 km has 1,5 km/s speed.
Calm down, they just managed to find traces of phosphine - a substance consisting only of phosphorus and hydrogen, PH₃. Phosphine is one of the potential biomarker substances - that is, those that may indicate the presence of life on the planet.
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