Discussions Populaires Dans la Communauté Cosmologie

Can something appear from nothing? If no, how did our universe appear? If yes, doesn't this violate the conservation principle? ‎

Réponses:

3

Adeptes:

3

Vues:

119

Vote Count:

1

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

Réponses:

3

Adeptes:

2

Vues:

207

Vote Count:

2

How many people have walked on the moon?‎

Réponses:

1

Adeptes:

1

Vues:

185

Vote Count:

0

Does the universe or solar system have a boundary or outer limit? Does the universe have an edge, and what's beyond it?‎

Réponses:

1

Adeptes:

1

Vues:

167

Vote Count:

0

How do scientists know what they do about the age and origin of the universe and earth?‎

Réponses:

1

Adeptes:

1

Vues:

91

Vote Count:

0

Are we unique in the universe, or is there another planet similar to Earth somewhere in the cosmos?‎

Réponses:

1

Adeptes:

1

Vues:

71

Vote Count:

0

Was gravity strong enough to make cosmic dust collapse in the early universe?‎

Réponses:

1

Adeptes:

0

Vues:

125

Vote Count:

0

Do you think that the recent discovery of gravitational waves GW150914 will help answer many open questions in physics, or creat other ones?‎

What are your arguments?‎

Réponses:

0

Adeptes:

0

Vues:

25

Vote Count:

0

We know time is nothing but a distance traveled by an object in space! Then what should be the energy that changing the distance into mass? ‎

Réponses:

0

Adeptes:

0

Vues:

2

Vote Count:

0

 

La répondre a été ajoutée par  Mahmoud Eltaher
Depuis 1 an

هو يوهانس كيبلر, عالم رياضيات و فلكي و فيزيائي ألماني توصل كيبلر الي استنتاجاته اثناء استخدام ملاحظات براهي الفلكيه الدقيقه ... Voir Plus