The Objects of Universe
It consists of energy and matter irregularly spread out,
scattered or divided up throughout the Universe is expanding of curving
space-time, but most of the matter and energy is not visible to humans.
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Expanding of curving space-time
(From past to present and into the future)
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Luminous
- Luminous – scientists now believe that the Universe is made of 70% dark energy (see Big Bang page), 27% dark matter, and around 3% ordinary “luminous” matter in the form of stars and galaxies.
Luminous
(matter in the form of stars and galaxies)
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Objects in the Universe
- ordinary luminous matter is clumped together in objects of varying size and densities – the term “objects” refers to individual items that astronomers can examine through telescopes.
Objects in the Universe
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On Earth
Plasma
- on Earth matter supports in three forms, as gas, liquid and solid – there are fourth form of matter; a completely converted totally ionized gas known as plasma – that can only be made in the laboratory.
- beyond Earth’s atmosphere, however, plasma is extremely common and is the main component of the “wind” produced by stars and the intergalactic medium from which they form.
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Largest astronomical objects
- largest astronomical objects are galaxies; following in terms of diminishing size by nebulas, stars, planets, moons, asteroids, comets and meteorites.
- all galaxies are made up of many billions of stars – they are considered to be a single – “one object” – this is because their stars orbit around common centre of gravity and have the same relative motion with respect to the rest of the Universe.
- objects be given tending towards a spherical shape because of gravitational forces across the surface of a sphere are in equilibrium.
(Click here for enlarge imagine.)
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Earth Bulge
- rotation making twist and press out of a shape – spherical objects into a discus-shape; for example, our Earth bulges around the Equator.
Earth Bulges
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Asteroids
- objects of less than about 50 miles in diameter have insufficient mass to achieve a spherical shape – that’s why smaller asteroids all have irregular shapes.
Asteroids
(It’s a large rocky body in space that orbits the sun – large numbers of these,
ranging enormously in size, are found between the orbits of Mars and Jupiter.)
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Back to The Universe page / next to Law of Nature page.