hubble length | 1 hubble length | 2 hubble length | 3 hubble length | 4 hubble length | 5 hubble length | 6 hubble length | 7 hubble length | 8 hubble length | 9 hubble length | 10 hubble length | 11 hubble length | 12 hubble length | 13 hubble length | 14 hubble length | 15 hubble length | 16 hubble length | 17 hubble length | 18 hubble length | 19 hubble length | 20 hubble length | 21 hubble length | 22 hubble length | 23 hubble length | 24 hubble length | 25 hubble length | 26 hubble length | 27 hubble length | 28 hubble length | 29 hubble length | 30 hubble length | 31 hubble length | 32 hubble length | 33 hubble length | 34 hubble length | 35 hubble length | 36 hubble length | 37 hubble length | 38 hubble length | 39 hubble length | 40 hubble length | 41 hubble length | 42 hubble length | 43 hubble length | 44 hubble length | 45 hubble length | 46 hubble length | 47 hubble length | 48 hubble length | 49 hubble length | 50 hubble length | 51 hubble length | 52 hubble length | 53 hubble length | 54 hubble length | 55 hubble length | 56 hubble length | 57 hubble length | 58 hubble length | 59 hubble length | 60 hubble length | 61 hubble length | 62 hubble length | 63 hubble length | 64 hubble length | 65 hubble length | 66 hubble length | 67 hubble length | 68 hubble length | 69 hubble length | 70 hubble length | 71 hubble length | 72 hubble length | 73 hubble length | 74 hubble length | 75 hubble length | 76 hubble length | 77 hubble length | 78 hubble length | 79 hubble length | 80 hubble length | 81 hubble length | 82 hubble length | 83 hubble length | 84 hubble length | 85 hubble length | 86 hubble length | 87 hubble length | 88 hubble length | 89 hubble length | 90 hubble length | 91 hubble length | 92 hubble length | 93 hubble length | 94 hubble length | 95 hubble length | 96 hubble length | 97 hubble length | 98 hubble length | 99 hubble length | 100 hubble length |
lunar distance | 3.543988039351 × 1017 LD | 7.087976078702 × 1017 LD | 1.0631964118053 × 1018 LD | 1.4175952157404 × 1018 LD | 1.7719940196755 × 1018 LD | 2.1263928236106 × 1018 LD | 2.4807916275457 × 1018 LD | 2.8351904314808 × 1018 LD | 3.1895892354159 × 1018 LD | 3.543988039351 × 1018 LD | 3.8983868432861 × 1018 LD | 4.2527856472212 × 1018 LD | 4.6071844511563 × 1018 LD | 4.9615832550914 × 1018 LD | 5.3159820590265 × 1018 LD | 5.6703808629616 × 1018 LD | 6.0247796668967 × 1018 LD | 6.3791784708318 × 1018 LD | 6.7335772747669 × 1018 LD | 7.087976078702 × 1018 LD | 7.4423748826371 × 1018 LD | 7.7967736865722 × 1018 LD | 8.1511724905073 × 1018 LD | 8.5055712944424 × 1018 LD | 8.8599700983775 × 1018 LD | 9.2143689023126 × 1018 LD | 9.5687677062477 × 1018 LD | 9.9231665101828 × 1018 LD | 1.0277565314118 × 1019 LD | 1.0631964118053 × 1019 LD | 1.0986362921988 × 1019 LD | 1.1340761725923 × 1019 LD | 1.1695160529858 × 1019 LD | 1.2049559333793 × 1019 LD | 1.2403958137728 × 1019 LD | 1.2758356941664 × 1019 LD | 1.3112755745599 × 1019 LD | 1.3467154549534 × 1019 LD | 1.3821553353469 × 1019 LD | 1.4175952157404 × 1019 LD | 1.4530350961339 × 1019 LD | 1.4884749765274 × 1019 LD | 1.5239148569209 × 1019 LD | 1.5593547373144 × 1019 LD | 1.5947946177079 × 1019 LD | 1.6302344981015 × 1019 LD | 1.665674378495 × 1019 LD | 1.7011142588885 × 1019 LD | 1.736554139282 × 1019 LD | 1.7719940196755 × 1019 LD | 1.807433900069 × 1019 LD | 1.8428737804625 × 1019 LD | 1.878313660856 × 1019 LD | 1.9137535412495 × 1019 LD | 1.949193421643 × 1019 LD | 1.9846333020366 × 1019 LD | 2.0200731824301 × 1019 LD | 2.0555130628236 × 1019 LD | 2.0909529432171 × 1019 LD | 2.1263928236106 × 1019 LD | 2.1618327040041 × 1019 LD | 2.1972725843976 × 1019 LD | 2.2327124647911 × 1019 LD | 2.2681523451846 × 1019 LD | 2.3035922255781 × 1019 LD | 2.3390321059717 × 1019 LD | 2.3744719863652 × 1019 LD | 2.4099118667587 × 1019 LD | 2.4453517471522 × 1019 LD | 2.4807916275457 × 1019 LD | 2.5162315079392 × 1019 LD | 2.5516713883327 × 1019 LD | 2.5871112687262 × 1019 LD | 2.6225511491197 × 1019 LD | 2.6579910295132 × 1019 LD | 2.6934309099068 × 1019 LD | 2.7288707903003 × 1019 LD | 2.7643106706938 × 1019 LD | 2.7997505510873 × 1019 LD | 2.8351904314808 × 1019 LD | 2.8706303118743 × 1019 LD | 2.9060701922678 × 1019 LD | 2.9415100726613 × 1019 LD | 2.9769499530548 × 1019 LD | 3.0123898334483 × 1019 LD | 3.0478297138419 × 1019 LD | 3.0832695942354 × 1019 LD | 3.1187094746289 × 1019 LD | 3.1541493550224 × 1019 LD | 3.1895892354159 × 1019 LD | 3.2250291158094 × 1019 LD | 3.2604689962029 × 1019 LD | 3.2959088765964 × 1019 LD | 3.3313487569899 × 1019 LD | 3.3667886373834 × 1019 LD | 3.402228517777 × 1019 LD | 3.4376683981705 × 1019 LD | 3.473108278564 × 1019 LD | 3.5085481589575 × 1019 LD | 3.543988039351 × 1019 LD |
The Hubble length or Hubble distance is a unit of distance in cosmology, defined as cH0−1 — the speed of light multiplied by the Hubble time. It is equivalent to 4,550 million parsecs or 14.4 billion light years. (The numerical value of the Hubble length in light years is, by definition, equal to that of the Hubble time in years.) The Hubble distance would be the distance between the Earth and the galaxies which are currently receding from us at the speed of light, as can be seen by substituting D = c/H0 into the equation for Hubble's law, v = H0D.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
hubble length | ≈ 14.4 billion light-years ≈ 4.55 gigaparsecs | ≈ 1.3623160903026E+26 m | Science - Astronomy (Length) |
Hubble length | lunar distance | Hubble length | lunar distance |
---|---|---|---|
1 | ≈ 3.543988039351E+17 | 4 | ≈ 1.4175952157404E+18 |
1.5 | ≈ 5.3159820590265E+17 | 4.5 | ≈ 1.5947946177079E+18 |
2 | ≈ 7.087976078702E+17 | 5 | ≈ 1.7719940196755E+18 |
2.5 | ≈ 8.8599700983775E+17 | 5.5 | ≈ 1.949193421643E+18 |
3 | ≈ 1.0631964118053E+18 | 6 | ≈ 2.1263928236106E+18 |
Lunar distance (LD), also called Earth–Moon distance, Earth–Moon characteristic distance, or distance to the Moon, is as a unit of measure in astronomy. It is the average distance from the center of Earth to the center of the Moon.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
lunar distance | LD | ≈ 384402 km | ≈ 384 402 000 m | Science - Astronomy (Length) |
lunar distance | Hubble length | lunar distance | Hubble length |
---|---|---|---|
1 | ≈ 2.8216799517843E-18 | 4 | ≈ 1.1286719807137E-17 |
1.5 | ≈ 4.2325199276764E-18 | 4.5 | ≈ 1.2697559783029E-17 |
2 | ≈ 5.6433599035686E-18 | 5 | ≈ 1.4108399758921E-17 |
2.5 | ≈ 7.0541998794607E-18 | 5.5 | ≈ 1.5519239734814E-17 |
3 | ≈ 8.4650398553529E-18 | 6 | ≈ 1.6930079710706E-17 |
Hubble length | lunar distance |
---|---|
1 | ≈ 3.543988039351 × 1017 |
2.8216799517843 × 10-18 | ≈ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |