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Who was the first person to make an orbital flight?

Yuri Gagarin was a Russian Cosmonaut and the first human in space, as well as the first human to orbit the earth.


What are space words that begin Y?

Oh, dude, space words that start with "Y"? You've got "yottawatt" which is a unit of power, "Yarkovsky effect" which is about asteroids, and "Yuri's Night" which is a space party celebrating Yuri Gagarin's first human spaceflight. Like, space lingo is out of this world, man!


Which subjective method is best to measure human activity of adults discuss in detail?

There are 3 subjective methodes of measuring human behaviour.1. Self-report questionnair2. Dairy methode3. Behavioural observation.In my opinion Behavioural observation is the best way to measure human activity. Behavioural observation is aim to collect data about physical activity behaviour. In this methode, we can observer the beahviour of a patient or a subject during any perfomance regarding the activity, sposed by psychlogist.


Would 600 liters of water last you 1000 years?

The consumption of fresh water is necessary for human life, and the question of adequate supplies applies especially to long space voyages (where resupply is practically impossible). Human requirements are about 2 liters per day, for normal condiitons and normal exertion. So 600 liters, unless recycled, would not last one year, much less a thousand. Recycling by distillation is only part of the problem : substantial water is lost to the air through perspiration, and some is bound in various body tissues. So 100% recovery and re-use would be extraordinarily difficult. And even with a 99% recovery rate, the 600 liters would be down to unusable levels in less than 100 years (losing 20 ml a day would exhaust 598 liters in 82 years). So the concept of long-term manned space travel is still restricted by this issue, among others, barring some exotic scientific solution.


Does air have mass and take up space?

we can say that air has mass and it occupies space by a small activity: take an inflated balloon and if we press it we can see that it is difficult to press becuse it hs mass and occupies the space avialable