Tag: expansion

21 Where does the energy of light go, when it red-shifts? 2016-10-06T21:50:39.160

19 Space expansion in layman terms 2013-09-27T11:44:27.500

16 On what scale does the universe expand? 2013-09-25T07:55:54.067

12 How many galaxies disappear beyond the Hubble Bubble horizon every year now? 2014-06-30T15:07:58.010

12 Will gravitational waves too far away ever reach us? 2016-02-22T21:43:20.387

10 Do all objects get larger in an "expanding universe"? 2013-09-25T17:50:54.560

10 Are there any galaxies which fell out of sight horizon due to cosmic expansion? 2016-03-28T13:23:57.063

9 How does the concept of a universe with no center work? 2016-03-04T02:17:26.683

9 In km/h, what actually is the "speed" of Andromeda away from us: cosmologically? 2016-10-06T15:46:21.677

9 Does the accelerating expansion of the Universe contradict Hubble's law? 2018-04-06T10:56:36.170

8 Expansion again: where does the energy come from? 2014-01-20T22:04:35.963

8 Dark Energy Expansion 2014-06-21T06:03:59.407

8 Expansion of Space 2015-03-13T22:29:41.510

8 How can gravity lead to the Big Crunch scenario? 2016-11-30T21:47:21.333

7 When the universe expands does it create new space, matter, or something else? 2015-04-21T03:48:54.830

7 How far would EGSY8p7 be away now? 2018-06-26T16:49:03.783

6 Heavy star and redshift 2014-01-09T16:35:23.733

6 Is the universe expanding faster than speed of light? 2014-03-08T06:59:08.443

6 How can an infinite universe expand? 2015-11-21T16:41:33.400

6 Is there an objective difference between space expansion and reduction in speed of light 2016-02-01T20:52:15.533

6 Why are galaxies distributed as walls and voids, or spider webs? 2016-10-12T20:59:28.260

6 How is the Milky Way on a collision course with Andromeda when the universe is expanding? 2017-12-16T02:10:33.840

5 Is dark energy constant? 2014-07-09T16:29:55.320

5 Does the universe expand at the same rate everywhere in the universe? 2015-09-04T16:42:26.153

5 Are black holes expanding? 2015-12-27T09:12:46.893

5 Redshift for gravitational waves? 2016-01-22T18:31:39.197

5 What accounts into calculating the Hubble constant? 2016-02-02T10:35:57.190

5 What is driving the expansion of the Universe? 2016-02-10T20:07:15.167

5 Distinction between metric expansion and objects just moving apart from each other? 2016-02-26T18:49:46.237

5 Did Gaia actually generate complete light curves for 212 Cepheids in other galaxies? 2016-09-23T14:59:58.017

5 Can the diminishing energy of the CMBR be the source of dark energy? 2017-01-19T08:43:37.763

5 Will we start seeing galaxies disappear due to Universe expansion? 2017-01-31T15:45:59.363

5 If the density of nebular distribution increases symmetrically in all directions, how does space curvature explain it? 2017-04-28T14:05:51.570

5 How did scientists come to the conclusion that it is space that is expanding? 2017-06-19T21:39:20.507

5 Influences from outside the observable universe explaining dark energy and expansion? 2018-07-05T00:54:47.623

4 Is the expansion of the universe proof of the big bang? 2014-05-16T20:10:29.413

4 Is the expansion accelerating or Decelerating? 2014-06-10T18:32:42.730

4 How many new galaxies enter the observable universe each day/year/decade? 2014-06-21T16:07:40.063

4 What is the explanation for rapid inflation just after the big bang? 2014-07-09T02:39:55.813

4 Do objects look larger the further away they are, beyond z=1? 2015-01-25T12:21:53.863

4 Are galaxies moving away from us faster than before? 2015-03-14T04:05:39.147

4 Is dark energy evenly spaced throughout Universe? 2015-03-15T03:52:33.600

4 Is expanding universe adding potential energy? 2015-07-26T13:16:34.320

4 Is there any proof of space being created? 2016-05-16T11:41:46.427

4 How does dark energy remain constant? 2017-04-25T10:04:26.117

4 Does Flat Universe mean even distribution? 2017-12-04T10:38:29.687

4 Angular Diameter Distance 2018-06-16T15:14:13.597

3 Conundrum involving distance to object, universal expansion, age of universe, etc 2014-04-13T10:00:57.100

3 how does redshift prove expansion is accelerating? 2014-07-05T15:08:22.027

3 Expansion of the Universe 2014-09-16T23:05:13.700

3 Why would all places appear to be at the center of the universe's expansion? 2015-02-07T19:49:36.297

3 Was the Universe expanding before the beginning of inflation? 2015-04-20T15:42:49.977

3 Evolution of the Hubble parameter 2015-04-26T17:37:09.117

3 Accelerating universe expansion and standard candle 2015-06-14T07:48:26.523

3 How could we tell if the Universe is infinite? 2016-03-04T04:33:59.173

3 Theoretically could the expansion of the universe affect acceleration due to gravity? 2016-06-09T01:42:46.940

3 Is time taken into account by astronomers when creating and using maps of the universe? 2016-06-14T12:19:03.330

3 How is the Universe's Expansion Accelerating if the Hubble Constant is Decreasing? 2016-10-28T00:25:06.627

3 Why does disorder (entropy) increase in the same direction of time as that in which the universe expands? 2016-11-08T15:13:18.617

3 How can the observable universe shrink in a Big Rip? 2017-01-30T21:57:51.767

3 Expansion of Space in the Very Distant Future 2017-04-05T21:04:04.630

3 Could Dark Energy be a "Cosmic Gravity Background" 2017-04-20T23:04:42.217

3 Total mass of light? 2017-05-06T17:37:50.897

3 Does wavelength affect redshift caused by the metric expansion of space? 2017-09-08T00:12:43.333

3 How can the universe be expanding faster than speed of light? 2017-10-12T19:14:50.523

3 Is the acceleration of the expansion of the universe a direct observation or an interpretation? 2018-09-26T08:46:34.980

2 What is the speed of light relative to (in space)? 2014-02-28T06:22:38.427

2 Do more objects appear on sky in time? 2014-03-01T14:52:11.163

2 What do we mean by space is expanding? 2014-06-10T18:45:59.723

2 What is CMB radiation doing to the universe? 2014-08-06T06:55:54.053

2 If the expansion of the universe is speeding up, how long until everything nears the speed of light, and what would happen? 2014-10-04T05:10:11.493

2 Big Bang / Big Crunch cycle? 2015-01-03T10:17:33.230

2 How do we know the universe's expansion is speeding up? 2015-04-04T23:07:03.840

2 Will Hubble's law always be accurate? 2015-06-06T14:16:15.733

2 Is it just the observable universe that is expanding? 2015-08-17T20:25:41.610

2 Are galaxies moving away with constant acceleration? 2015-08-17T21:44:44.373

2 How to disentangle a very distant star's relative velocity vs. redshift distance 2015-10-29T01:44:08.577

2 Looking for an equation that describes how star (x,y,z) positions are affected by expanding universe 2015-12-07T19:17:06.433

2 What exactly is meant by "expanding universe"? 2016-02-25T03:07:27.910

2 Can the expansion of spacetime be directly measured with laser interferometry (like GW can) 2016-04-08T10:49:52.563

2 Does the redshifting of photons from the Universe's expansion violate conservation of momentum? 2016-11-24T16:26:47.037

2 Velocity of most distant galaxies 2017-06-08T20:39:07.123

2 How much does a linear lightyear of space expand in a year? 2017-07-27T23:50:10.197

2 Is it fruitful to search for a correlation between rates of in-falling matter in black holes and the expansion rate of our universe? 2018-01-13T03:36:11.767

2 Where can I find source data for the graph of metric expansion over time, as shown in this ESA web page? 2018-06-05T09:29:09.057

2 Are galaxies expanding away from us at more than the speed of light? 2018-06-26T22:51:45.537

2 Light beam (1 photon) in the limited universe? 2018-08-02T11:50:32.983

2 how do we know the universe is STILL expanding? 2018-11-05T13:34:21.767

2 From CMB anisotropy data observed in 1992, did astronomers figure out that the universe should be accelerating before its discovery in 1998? 2018-11-14T07:12:11.693

1 Contradict the expansion of the universe? 2014-01-26T14:14:45.517

1 Are we moving away or towards each other? 2014-03-21T18:00:13.967

1 If the speed at which the universe contracts in reverse time decreases over time, then how did scientists arrive at a date for "The Big Bang"? 2014-09-10T13:14:42.337

1 Gravitational red hift vs Doppler redshift: Is the universe really expanding? 2015-11-07T12:43:33.690

1 Cosmology: about the equations of expansions 2016-10-10T03:44:29.763

1 Centerless expansion or a matter of perspective 2016-10-19T03:11:48.863

1 How can space expand in accelerating speed when dark energy is constant? 2016-12-03T13:53:11.607

1 How long will it be until the nearby groups of galaxies are receding at speeds faster than light? 2017-03-29T22:49:02.973

1 Does gravity repel when dark energy is involved? 2017-09-19T13:03:32.530

1 Is an expanding universe equivalent to a universe in which everything is shrinking? 2017-10-01T13:13:35.953