Questions tagged [crewed-spaceflight]

Crewed spaceflight (also referred to as human spaceflight or manned spaceflight) is space travel with a crew aboard the spacecraft. When a spacecraft is crewed, it can be operated directly, as opposed to being remotely operated or autonomous.

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Have capsule-free taxi spacecraft ever been seriously considered for non-emergency use?

Capsules are heavy, but necessary. Or at least, they are necessary for launch, landing, and stays in space lasting more than an hour or two. But it is possible to imagine situations where cosmonauts ...
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What mission is this Chris Hadfield photo associated with and what is the location? And what is that thing?

Many, many astronauts have gone on to be wonderful orators, educators, advocates for science, education and positive thinking, Major Tom Colonel (ret) and (fmr) ISS Commander Chris Hadfield is just ...
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Can they still make espresso on the ISS? If so, with what?

This comment suggests that the origional ISSpresso machine may no longer be running on the ISS. Is that so? If so, can they still make espresso on the ISS? If both are so, with what do they make it?
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Tea bags to find the leak on the International Space Station?

Katya Pavlushchenko (@katlinegrey)'s tweet says: Here’s some of today’s news from the ISS. First of all, the leak was finally found (thanks to the tea bag). Anatoly Ivanishin sent photos to the ...
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Flight characteristics of a three-passenger rocket with a range of up to 500 miles (800 km)?

If I could bring two of my best friends to a spaceport and take a rapid trip to a city hundreds of kilometers away (think half an hour to cross a continent), what would would be the vehicle's flight ...
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In Crew Dragon do the astronauts feel like flying upside-down?

When looking at Crew Dragon flight paths diagrams I saw that for phasing burns and deorbit burns they don't use the side thrusters, as I would expect, but four thrusters mounted at the "top" ...
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Have people in orbit ever been bothered by the difference between their orbit and the station's?

When floating inside a large space station, while away from its center of mass and without touching the structure of the station, the person floating and the station will have slightly different ...
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Why would such a powerful computer (or a computer at all) be needed to go to the Moon?

I keep hearing people say things like: Duuuude! It's so insane that we're carrying around phones in our pockets that are a thousand times faster than the computers that took us to the moon! Why do ...
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Can space suit gloves hear, feel, or otherwise sense information through augmentation? Will they?

@mdouglasbibbey's answer describes a situation where it was impossible to "hear" = feel important information while working on Hubble during an EVA, including haptic feedback when a quick ...
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What happens to astronaut sweat on the ISS?

Does perspiration from the astronauts aboard the ISS stick to the skin, evaporate or somehow float away from the skin? Is the part of the sweat that sticks to an astronaut's skin kept there until they ...
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How does it feel to breathe 100% oxygen at low pressure?

Some space suits are designed to provide an atmosphere of 100% oxygen but at a reduced air pressure about 20% that of sea level. Is breathing in such a suit uncomfortable? It seems like having such a ...
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Is disabling glare common in space?

I'd like to know if astronauts have been under the effect of Disabling Glare, how easily this could accidentally happen and how long can last if this happen?
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Would it be easier to put humans on Venus rather than Mars?

With all the speculation of manned missions to Mars, there is very little talk of a manned mission to Venus (whose orbit is closer to the orbit of Earth than mars is). That being said, would it be ...
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Are there any superstitions practiced in space?

I know there are many superstitious rituals practiced on the ground before liftoff. A well known superstition/tradition is urinating on the rear right tire of the vehicle bringing cosmonauts and ...
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mass of the decks in the crewed SpaceX Starship [closed]

I want to work out the approximate mass of a Starship (crewed version) deck. We can assume an internal diameter of 8 meters with a 1.5 meter diameter central support tube. The loading is uncertain but ...
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State of Starman?

If Starman had been human and not a dummy, what would their state be now? Preserved or decayed? Dried? Frozen?
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Why don't astronauts email their inventory?

I was looking at the SpaceX Dragon capsule reentry. At some time after wake-up Bob gave a precise account of what was consumed from which bag. So many bottles of water, so many breakfasts, this bag ...
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Did/does the US use statute or nautical miles to decide who gets astronaut wings?

As mentioned in a few questions and answers (1,2,3,4), US astronauts receive their astronaut wings upon crossing the 50 mile altitude mark. Are these statute miles (1609.344 m, 5280 ft) or nautical ...
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Was the Space Shuttle always crewed?

Maybe this question sounds snaive to some educated people, but I'm not clear if the Space Shuttle could and was ever used without a crew. And what was the smallest and the biggest crew size it ever ...
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Why was the SpaceX Demo 2 spashdown livestream so devoid of visuals?

Today's successful splashdown was tremendously boring compared to what we are used to from SpaceX launches. The mission statistics, the timeline, inner cockpit, etc was not shown during the telecast. ...
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Can Virgin Galactic's Orbital ship reach ISS

We have all come across theories, concepts proposed missions of orbit tour as a part of space tourism. One such company is Virgin Galactic. I have had read that the SpaceShip2 will have merely 6 mins ...
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Procedure to deal with the death of Apollo astronaut during a lunar mission

During Apollo lunar missions, had the command module pilot have died while the other two astronauts were on the Moon, or had only one of the two lunar walkers died, did NASA have a procedure for such ...
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How will the recovery of the first crewed Crew Dragon water recover differ from previous recoveries of Crew and Cargo flavors?

The NASA video Expedition 63 Inflight with New York Times, Fox News, and USA Today - July 7, 2020 includes an interview with Fox News reporter Bill Hemmer, who asks: I am most interested in your ...
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What's the longest crewed space mission flight ever?

I wonder what the longest single space mission ever was/is. This question doesn't ask for the longest single spaceflight of a human (this are Valery Polyakov's 437 d 18 h on Mir who launched with ...
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How do Russians enumerate old Soviet space missions?

How are old Soviet space missions numbered in Russia? Were the earliest missions actually given a number, or are they referred to by their cosmonaut, or by a spacecraft nickname instead? Does the ...
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Plans for HUD in next-generation spacesuits

A HUD (Head Up Display) allows a computer to display information directly into a user's line of sight and thus allows them to interface with that computer without needing to look at a tablet or ...
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Duration of SpaceX Demo-2 mission

I've read that the duration of the current SpaceX demo mission to the ISS and back is highly variable. It was originally estimated they could be on-board the ISS from 1 to 4 months, and currently ...
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Could a spacesuit similar to the suit of Felix Baumgartner be used on the Moon and Mars?

Felix Baumgartner, who jumped from the upper stratosphere in the Red Bull Stratos project, wore a pressurized suit in which he could obviously do better than Apollo's astronauts in their A7L and A7LB ...
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What is the cheapest possible way to land a crew of 2 on the moon?

During the Apollo moon missions, a single very large rocket sent both the Apollo CSM and the LM to the moon in a single shot and it took only around 3 days to get there. However, after the Apollo ...
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What typically gets sent to the ISS?

I'm working on a project that aims to understand what is needed to live in space. I understand the basic concepts and vital items needed, but I'd love to see a direct example of what is already being ...
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Would the national flag planted by astronauts on Mars need an upper horizontal pole like the ones on the Moon?

Due to the lack of an atmosphere on the Moon, the Apollo lunar flags had an upper horizontal pole in order to make them fully hoisted, looking like floating in the wind. Now Mars does have an ...
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How many current or near-future pressure suits are there for use in space in total?

There are some pressure suits primarily for use inside spacecraft and some for use during EVAs. Currently how many pressure suits are used or will be used in the near future; let's say from 5 year ...
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Tradeoffs sending a tank of fuel ahead of a crewed mission to another planet?

This is something that I'd seen in the BBC fictional documentary Voyage to the Planets. There, as the crew arrives in the orbit of Mars, there's a tank that has already been sent there so that the ...
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After the Crew Dragon's success, does Boeing's Starliner still offer value?

Boeing's Starliner is more expensive than Crew Dragon and seems not to offer any significant advantages. Is there still value to NASA or other parties in the future to having a choice between the two?
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Do non-American space travellers train on Dragon capsule as well?

Soyuz is a spacecraft which still uses technologies from soviet era. The Dragon capsule is state of the art with its electronic upgrades. With Russia and US sharing the International Space Station ...
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Book Recommendation on History of Spaceflight

I'm a CS/Engineering student at CalTech and I'm searching for a book that can help me better understand the history of spaceflight and the problems associated with getting humans to space. Since this ...
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How does the Commercial Crew Program differ from the way NASA's previous crewed systems were developed and operated?

This overview of the Commercial Crew Program on NASA's site describes the difference between Commercial Crew and previous systems (I have numbered the original bullet points for easier reference): ...
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Why would spacecraft docking to the ISS have a different atmospheric pressure?

In the SpaceX Demo 2 Crew Dragon livestream, they had to equalize pressure between the ISS and the Dragon spacecraft. The voice on the stream said that they were bringing it to levels that match Earth'...
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Are there any differences in docking procedures between ISS and manned capsules vs. unmanned capsules?

The Russian Soyuz has an extensive history in docking with ISS with both manned and unmanned capsules. SpaceX just recently demonstrated manned-capsule docking with ISS with a history of unmanned ...
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Why does opening the Crew Dragon hatch take so long?

What procedures are followed during opening of the hatches of both ISS and Crew Dragon, and why does it take so long?
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Once in Earth orbit, what is the strongest propulsive acceleration an astronaut has experienced?

Early crewed launches subjected astronauts to large propulsive acceleration, usually right at the end of a stage before shut down and separation when the mass for that stage is minimum. (see ...
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What are the appropriate phrases to use to wish an astronaut safe travels?

When you want to wish an astronaut "safe travels", what particular phrases are commonly used? I'm looking for historical phrases as well as more modern. Although I'm more interested in English ...
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What specific threshold requirements or conditions is satisfied by the SpaceX Demo-2 Crew Dragon to warrant a manned flight? [closed]

I am wondering if there has been enough tests before the maiden manned flight of Demo-2 Crew Dragon. There were an autonomous flight test a year ago and a flight abort test late last year. There seem ...
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Why the long (19 hour) mission profile for SpaceX's trip to ISS?

As mentioned briefly in this question, The Russian Soyuz has been using a sub-4 hour path to ISS. Why the long ride from Canaveral? Or is the 19-hour timeframe typical of all launches prior to the "...
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Thrombosis risk before launch

I am currently following the live broadcast of today's SpaceX launch. For a few hours already, astronauts are sitting inside the vessel, barely able to move. I wonder what precautions are taken to ...
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Why do they make the astronauts sit in Crew Demo-2 for so long?

I just tuned in to the live "broadcast" for the Crew Demo-2 and it looks like the astronauts sat down over an hour and a half ago, and there's still more than an hour to go. Why do (did) they have to ...
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Thermal management of manned craft at Ceres

I would like help in designing a manned craft for exploration and mining activities on Ceres. The sunlight reaching Ceres is approx 10% of that in LEO. Does this mean the spacecraft would have ...
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Why is the Fuji capsule design philosophy not seen in other proposals?

Fuji is my favorite unflown dead spacecraft proposal (narrowly beating out Dynasoar). I am well aware of why Fuji has its weird/unique design, but what I'm curious about is why it's unique. In my ...
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Why does the ISS occasionally operate with just 3 crew members?

There have many instances where the ISS only has 3 crew members, often for many weeks. This places significant strain on workload and productivity. Why isn't a new crew launched quicker?
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Why are we still giving medical support to astronauts after they land? Or any support for that matter?

Besides moving the astronauts around, what are the medical team needed for? I assume they are already wearing some type of monitors for heart/breathing/etc. A call on the radio can confirm if they are ...

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