Описание презентации по отдельным слайдам:
WHAT WE KNOW ABOUT SPACE
The universe can be a very strange place. While groundbreaking ideas such as quantum theory, relativity and even the Earth going around the Sun might be commonly accepted now, science still continues to show that the universe contains things you might find it difficult to believe and to understand.
WE DON’T KNOW… 1. How big it is: Maybe 150 billion light years across? 2. What shape it is. Probably flat. Maybe a Picard horn. 3. What caused the Big Bang. God? Maybe just the natural result of physics? 4. What makes up 95 percent of the universe. Well, we know atoms make up stars. But dark matter and dark energy? 2 4 3
5. Why is the universe just right for us? It’s been called the Goldilocks paradox 6. Whether there’s one, or many universes. Welcome to the multiverse 7. Whether we’re alone. Roughly one-in-five Sun-like stars in our galaxy have Earth-like worlds. That’s a lot of places to look.
space is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles: predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays
Earth orbit was first achieved by Yuri Gagarin of the Soviet Union in 1961 and unmanned spacecraft have since reached all of the known planets in the Solar System
Outer space represents a challenging environment for human exploration because of the dual hazards of vacuum and radiation. Microgravity has a negative effect on human physiology, causing muscle atrophy and bone loss.
The Milky Way is the galaxy that contains our Solar System. Its name “milky” is derived from its appearance as a dim glowing band arching across the night sky in which the naked eye cannot distinguish individual stars.
A black hole is defined as a region of spacetime from which gravity prevents anything, including light, from escaping
The Outer Space Treaty provides the basic framework for international space law. It covers the legal use of outer space by nation states, and includes in its definition of outer space the Moon and other celestial bodies
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