Expansion of the Universe

Title Hits
Can two galaxies move away from each other faster than the speed of light? (Intermediate) Views: 88410
Cosmologists say the expansion of the universe is accelerating, what is driving this? (Intermediate) Views: 36368
Is the universe really like an expanding balloon? (Intermediate) Views: 65911
How can observations of the distant universe prove that the expansion is accelerating *now*? (Advanced) Views: 32254
Is the universe expanding faster than the speed of light? (Intermediate) Views: 439372
How do we define distance in an expanding universe? (Intermediate) Views: 75100
No matter how fast the universe is expanding, shouldn't gravity eventually make it recollapse? (Intermediate) Views: 32190
What is the universe expanding into? (Intermediate) Views: 547900
Why is it difficult to understand the expansion of the universe? (Beginner) Views: 68059
If the universe is "bounded" today, could it one day become "unbounded"? (Advanced) Views: 38315
How are galaxy distances inferred from their recessional velocities? (Intermediate) Views: 59755
What would the Big Crunch look like to an observer on Earth? (Advanced) Views: 42035
How fast is the Universe expanding? (Intermediate) Views: 84088
Could our position in the universe affect our perceptions of the expansion? (Intermediate) Views: 45115
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate) Views: 59355
How is it proved that the Universe is expanding? (Intermediate) Views: 65728
What is the difference between the "Doppler" redshift and the "gravitational" or "cosmological" redshift? (Advanced) Views: 83829
Could the Universe have expanded faster than the speed of light at the Big Bang? (Intermediate) Views: 81118
Is cosmic expansion happening on microscopic scales? (Advanced) Views: 35902
How do we know if the universe will keep expanding forever? (Intermediate) Views: 80675
How do supernovae show us that the Universe's expansion is accelerating? (Advanced) Views: 14206
When measuring the expansion of the universe, do astronomers consider that they're seeing how galaxies moved long ago, not today? (Intermediate) Views: 33102
Is dark energy affected by black holes? (Intermediate) Views: 26549
As the universe expands, why don't galaxies get stretched out? (Intermediate) Views: 14557

Search Our Q&A Archive

Share This Page

Share This

Most Popular

Our Reddit AMAs

AMA = Ask Me (Us) Anything