There is a pressure drop in a Soyuz cooling loop.
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The Soyuz is the return capsule for three astronauts on board (2 from Russia, one from the US). If there is a more serious problem with that Soyuz capsule then Russia could launch one without crew to the ISS to bring the astronauts home. Or, if we explore more exotic options, Crew-6 (Dragon) could launch with three empty seats. Most likely neither of these will be needed.
sophiecentaur said:
I know there's a lot of re-usable stuff in modern space flight but the proportion of the footprint due to actual fuel, as opposed to the manufacturing footprint is probably similar to that for a domestic car. Not too dissimilar total mileage. People tend to forget that, as they do when they buy a new 'economical' family car.
Starship is designed to be fully reusable, and dearMoon will only fly after SpaceX has routinely reused both stages many times. The main carbon footprint will be the fuel used for that mission.
@TeethWhitener: 3.5 tonnes of oxygen per tonne of methane, so only 1/4.5 of the propellant is methane. Roughly 1000 tonnes per launch. dearMoon could need 1-2 refueling flights in space, but we still end up with less methane.
Tom.G said:
And it gets rid of a bunch of that potent GHG (GreenHouse Gas), Methane!
It doesn't get the methane from the atmosphere. It's sourced from natural gas, although SpaceX wants to produce some from atmospheric CO2 and water.
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SpaceX is preparing two almost simultaneous launches: Two communication satellites for SES on Friday 21:21 UTC and a Starlink launch on Friday 21:54, both from Florida. With just half an hour between launches, they'll likely start fueling the second rocket while the other one is still on its launch pad. This means they have two fully independent launch teams in Florida.
Meanwhile the launch pad in California is preparing a Falcon 9 with
SWOT, an Earth observation satellite that will measure water levels with centimeter precision (Thursday 11:46 UTC). Three launches in 1.5 days if nothing gets delayed.