Question

2 min speech on outer space

Answer 1

Universe is open and it is ceaselessly expanding. Space means the whole universe, including the earth, while outer space refers to space other than the earth; outer space begins where the earth's atmosphere ends and extends in all directions. Like, the air we breathe, space is everywhere and all around us. Most people describe space as the universe and do not distinguish between them. When the Universe was first talked of, as an orderly unit, it was called the cosmos, to distinguish it from chaos or disorder. The study of the cosmos was known as Cosmogony or Cosmology. The popular references now are to space and space sciences. Space is a wholly natural phenomenon and cannot either be created or destroyed by mankind, while the space sciences are evolved by talented scientists, a part of mankind. The observable universe has a diameter of 25 billion light years and the number of galaxies it contains is still uncertain. Theories of space also differ, and these are based on the flight of galaxies. Outer space is infinite; in fact it is so vast that the usual terrestrial units of measurement hardly suit its dimensions. The new units of measurement evolved by scientists are Light Years and the Astronomical Unit. It is well known that light and sound are the two principal media through which we gather our impressions of the external world

Answer 2

Answer:

No one can hear you scream in space. this is often because of the very fact that there's no air in space - it's a vacuum. A vacuum cannot contain sound waves.

'Outer space' begins about 100 kilometres above the planet, where the shell of air that surrounds our planet vanishes. Space appears as a black blanket dotted with stars because there's no air to scatter sunlight and produce a sky.

Space is often thought to be completely empty. But this can be not the case. Huge amounts of thinly spread gas and dirt fill the vast gaps between stars and planets. Even the foremost empty parts of space have some hundred atoms or molecules per cubic meter.

There are numerous styles of radiation in space that are hazardous to astronauts. The Sun is to blame for an outsized portion of this infrared and ultraviolet light.

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