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Is the universe expanding or are we just able to observe more of it?

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Question ajoutée par Amal Brahmi , Primary teacher , Ajyal Alghad
Date de publication: 2014/04/29
Hamza Tahboub
par Hamza Tahboub , Intern (Web Development) , Insan Wa Alat

The universe is expanding and will keep expanding forever.

Fawzi Abusalma
par Fawzi Abusalma , Physics Tutor , Independent Teacher

It was measured that the electromagnetic spectrums of  stars in all the observed gallaxies(except for close ones) are shifted (red shift as a consequence of doppler effect), indicating that those gallaxies are moving away from us. this fits Enistein's general theory of relativity, specially when the shift was so high indicating that the gallaxies are moving at speeds greater than the speed of light which meant (with other evidences of course) that there's a production of space-time in the universe. so the universe is expanding by producing more space.

jerome kaypee
par jerome kaypee , High School Teacher , Calcutta International School

the universe is expanding and expanding at an accelerated rate as opposed to what was previously thought, as shown by the (doppler) red shift in stellar light

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