Expansion of the Universe

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Can two galaxies move away from each other faster than the speed of light? (Intermediate) Views: 96875
Cosmologists say the expansion of the universe is accelerating, what is driving this? (Intermediate) Views: 38329
Is the universe really like an expanding balloon? (Intermediate) Views: 68900
How can observations of the distant universe prove that the expansion is accelerating *now*? (Advanced) Views: 33713
Is the universe expanding faster than the speed of light? (Intermediate) Views: 454812
How do we define distance in an expanding universe? (Intermediate) Views: 78741
No matter how fast the universe is expanding, shouldn't gravity eventually make it recollapse? (Intermediate) Views: 33782
What is the universe expanding into? (Intermediate) Views: 562167
Why is it difficult to understand the expansion of the universe? (Beginner) Views: 70079
If the universe is "bounded" today, could it one day become "unbounded"? (Advanced) Views: 39985
How are galaxy distances inferred from their recessional velocities? (Intermediate) Views: 62142
What would the Big Crunch look like to an observer on Earth? (Advanced) Views: 43838
How fast is the Universe expanding? (Intermediate) Views: 85900
Could our position in the universe affect our perceptions of the expansion? (Intermediate) Views: 47001
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate) Views: 61138
How is it proved that the Universe is expanding? (Intermediate) Views: 72111
What is the difference between the "Doppler" redshift and the "gravitational" or "cosmological" redshift? (Advanced) Views: 87211
Could the Universe have expanded faster than the speed of light at the Big Bang? (Intermediate) Views: 84877
Is cosmic expansion happening on microscopic scales? (Advanced) Views: 37534
How do we know if the universe will keep expanding forever? (Intermediate) Views: 85062
How do supernovae show us that the Universe's expansion is accelerating? (Advanced) Views: 15558
When measuring the expansion of the universe, do astronomers consider that they're seeing how galaxies moved long ago, not today? (Intermediate) Views: 34600
Is dark energy affected by black holes? (Intermediate) Views: 27984
As the universe expands, why don't galaxies get stretched out? (Intermediate) Views: 15887

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