Objects

1The 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

  • 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.

Plasma

 

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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.

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