| 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 |
| link | 6.7720183204847 × 1026 lnk | 1.3544036640969 × 1027 lnk | 2.0316054961454 × 1027 lnk | 2.7088073281939 × 1027 lnk | 3.3860091602424 × 1027 lnk | 4.0632109922908 × 1027 lnk | 4.7404128243393 × 1027 lnk | 5.4176146563878 × 1027 lnk | 6.0948164884363 × 1027 lnk | 6.7720183204847 × 1027 lnk | 7.4492201525332 × 1027 lnk | 8.1264219845817 × 1027 lnk | 8.8036238166301 × 1027 lnk | 9.4808256486786 × 1027 lnk | 1.0158027480727 × 1028 lnk | 1.0835229312776 × 1028 lnk | 1.1512431144824 × 1028 lnk | 1.2189632976873 × 1028 lnk | 1.2866834808921 × 1028 lnk | 1.3544036640969 × 1028 lnk | 1.4221238473018 × 1028 lnk | 1.4898440305066 × 1028 lnk | 1.5575642137115 × 1028 lnk | 1.6252843969163 × 1028 lnk | 1.6930045801212 × 1028 lnk | 1.760724763326 × 1028 lnk | 1.8284449465309 × 1028 lnk | 1.8961651297357 × 1028 lnk | 1.9638853129406 × 1028 lnk | 2.0316054961454 × 1028 lnk | 2.0993256793503 × 1028 lnk | 2.1670458625551 × 1028 lnk | 2.23476604576 × 1028 lnk | 2.3024862289648 × 1028 lnk | 2.3702064121697 × 1028 lnk | 2.4379265953745 × 1028 lnk | 2.5056467785793 × 1028 lnk | 2.5733669617842 × 1028 lnk | 2.641087144989 × 1028 lnk | 2.7088073281939 × 1028 lnk | 2.7765275113987 × 1028 lnk | 2.8442476946036 × 1028 lnk | 2.9119678778084 × 1028 lnk | 2.9796880610133 × 1028 lnk | 3.0474082442181 × 1028 lnk | 3.115128427423 × 1028 lnk | 3.1828486106278 × 1028 lnk | 3.2505687938327 × 1028 lnk | 3.3182889770375 × 1028 lnk | 3.3860091602424 × 1028 lnk | 3.4537293434472 × 1028 lnk | 3.5214495266521 × 1028 lnk | 3.5891697098569 × 1028 lnk | 3.6568898930618 × 1028 lnk | 3.7246100762666 × 1028 lnk | 3.7923302594714 × 1028 lnk | 3.8600504426763 × 1028 lnk | 3.9277706258811 × 1028 lnk | 3.995490809086 × 1028 lnk | 4.0632109922908 × 1028 lnk | 4.1309311754957 × 1028 lnk | 4.1986513587005 × 1028 lnk | 4.2663715419054 × 1028 lnk | 4.3340917251102 × 1028 lnk | 4.4018119083151 × 1028 lnk | 4.4695320915199 × 1028 lnk | 4.5372522747248 × 1028 lnk | 4.6049724579296 × 1028 lnk | 4.6726926411345 × 1028 lnk | 4.7404128243393 × 1028 lnk | 4.8081330075442 × 1028 lnk | 4.875853190749 × 1028 lnk | 4.9435733739539 × 1028 lnk | 5.0112935571587 × 1028 lnk | 5.0790137403635 × 1028 lnk | 5.1467339235684 × 1028 lnk | 5.2144541067732 × 1028 lnk | 5.2821742899781 × 1028 lnk | 5.3498944731829 × 1028 lnk | 5.4176146563878 × 1028 lnk | 5.4853348395926 × 1028 lnk | 5.5530550227975 × 1028 lnk | 5.6207752060023 × 1028 lnk | 5.6884953892072 × 1028 lnk | 5.756215572412 × 1028 lnk | 5.8239357556169 × 1028 lnk | 5.8916559388217 × 1028 lnk | 5.9593761220266 × 1028 lnk | 6.0270963052314 × 1028 lnk | 6.0948164884363 × 1028 lnk | 6.1625366716411 × 1028 lnk | 6.230256854846 × 1028 lnk | 6.2979770380508 × 1028 lnk | 6.3656972212556 × 1028 lnk | 6.4334174044605 × 1028 lnk | 6.5011375876653 × 1028 lnk | 6.5688577708702 × 1028 lnk | 6.636577954075 × 1028 lnk | 6.7042981372799 × 1028 lnk | 6.7720183204847 × 1028 lnk |
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 | links | Hubble length | links |
|---|---|---|---|
| 1 | ≈ 6.7720183204847E+26 | 4 | ≈ 2.7088073281939E+27 |
| 1.5 | ≈ 1.0158027480727E+27 | 4.5 | ≈ 3.0474082442181E+27 |
| 2 | ≈ 1.3544036640969E+27 | 5 | ≈ 3.3860091602424E+27 |
| 2.5 | ≈ 1.6930045801212E+27 | 5.5 | ≈ 3.7246100762666E+27 |
| 3 | ≈ 2.0316054961454E+27 | 6 | ≈ 4.0632109922908E+27 |
The link (usually abbreviated as "l.", "li." or "lnk."), sometimes called a Gunter’s link, is a unit of length formerly used in many English-speaking countries. A link is exactly 66⁄100 of a foot, or exactly 7.92 inches or 20.1168 cm.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| link | lnk | ≡ 1⁄100 ch ≡ 0.66 ft (US) ≡ 7.92 in | ≈ 0.2011684 m | Imperial/US |
| links | Hubble length | links | Hubble length |
|---|---|---|---|
| 1 | ≈ 1.4766646406952E-27 | 4 | ≈ 5.9066585627809E-27 |
| 1.5 | ≈ 2.2149969610428E-27 | 4.5 | ≈ 6.6449908831285E-27 |
| 2 | ≈ 2.9533292813904E-27 | 5 | ≈ 7.3833232034761E-27 |
| 2.5 | ≈ 3.691661601738E-27 | 5.5 | ≈ 8.1216555238237E-27 |
| 3 | ≈ 4.4299939220856E-27 | 6 | ≈ 8.8599878441713E-27 |
| Hubble length | links |
|---|---|
| 1 | ≈ 6.7720183204847 × 1026 |
| 1.4766646406952 × 10-27 | ≈ 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 …) |