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 |
light-year | 14 400 000 000 ly | 28,799,999,999.999 ly | 43,199,999,999.999 ly | 57,599,999,999.999 ly | 71,999,999,999.998 ly | 86,399,999,999.998 ly | 100 800 000 000 ly | 115 200 000 000 ly | 129 600 000 000 ly | 144 000 000 000 ly | 158 400 000 000 ly | 172 800 000 000 ly | 187 200 000 000 ly | 201,599,999,999.99 ly | 215,999,999,999.99 ly | 230,399,999,999.99 ly | 244,799,999,999.99 ly | 259,199,999,999.99 ly | 273,599,999,999.99 ly | 287,999,999,999.99 ly | 302,399,999,999.99 ly | 316,799,999,999.99 ly | 331,199,999,999.99 ly | 345,599,999,999.99 ly | 359,999,999,999.99 ly | 374,399,999,999.99 ly | 388,799,999,999.99 ly | 403,199,999,999.99 ly | 417,599,999,999.99 ly | 431,999,999,999.99 ly | 446,399,999,999.99 ly | 460,799,999,999.99 ly | 475,199,999,999.99 ly | 489,599,999,999.99 ly | 503,999,999,999.99 ly | 518,399,999,999.99 ly | 532,799,999,999.99 ly | 547,199,999,999.99 ly | 561,599,999,999.99 ly | 575,999,999,999.99 ly | 590,399,999,999.99 ly | 604,799,999,999.99 ly | 619,199,999,999.98 ly | 633,599,999,999.98 ly | 647,999,999,999.98 ly | 662,399,999,999.98 ly | 676,799,999,999.98 ly | 691,199,999,999.98 ly | 705,599,999,999.98 ly | 719,999,999,999.98 ly | 734,399,999,999.98 ly | 748,799,999,999.98 ly | 763,199,999,999.98 ly | 777,599,999,999.98 ly | 791,999,999,999.98 ly | 806,399,999,999.98 ly | 820,799,999,999.98 ly | 835,199,999,999.98 ly | 849,599,999,999.98 ly | 863,999,999,999.98 ly | 878,399,999,999.98 ly | 892,799,999,999.98 ly | 907,199,999,999.98 ly | 921,599,999,999.98 ly | 935,999,999,999.98 ly | 950,399,999,999.98 ly | 964,799,999,999.98 ly | 979,199,999,999.98 ly | 993,599,999,999.98 ly | 1 008 000 000 000 ly | 1 022 400 000 000 ly | 1 036 800 000 000 ly | 1 051 200 000 000 ly | 1 065 600 000 000 ly | 1 080 000 000 000 ly | 1 094 400 000 000 ly | 1 108 800 000 000 ly | 1 123 200 000 000 ly | 1 137 600 000 000 ly | 1 152 000 000 000 ly | 1 166 400 000 000 ly | 1 180 800 000 000 ly | 1 195 200 000 000 ly | 1 209 600 000 000 ly | 1 224 000 000 000 ly | 1 238 400 000 000 ly | 1 252 800 000 000 ly | 1 267 200 000 000 ly | 1 281 600 000 000 ly | 1 296 000 000 000 ly | 1 310 400 000 000 ly | 1 324 800 000 000 ly | 1 339 200 000 000 ly | 1 353 600 000 000 ly | 1 368 000 000 000 ly | 1 382 400 000 000 ly | 1 396 800 000 000 ly | 1 411 200 000 000 ly | 1 425 600 000 000 ly | 1 440 000 000 000 ly |
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 | light-years | Hubble length | light-years |
---|---|---|---|
1 | ≈ 14400000000 | 4 | ≈ 57599999999.999 |
1.5 | ≈ 21599999999.999 | 4.5 | ≈ 64799999999.998 |
2 | ≈ 28799999999.999 | 5 | ≈ 71999999999.998 |
2.5 | ≈ 35999999999.999 | 5.5 | ≈ 79199999999.998 |
3 | ≈ 43199999999.999 | 6 | ≈ 86399999999.998 |
The light-year is a unit of length used to express astronomical distances. It is about 9.5 quadrillion metres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word "year", the term light-year is sometimes misinterpreted as a unit of time.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
light-year | ly | ≡ Distance light travels in vacuum in 365.25 days | = 9.4607304725808×1015 m | Science - Astronomy (Length) |
light-years | Hubble length | light-years | Hubble length |
---|---|---|---|
1 | ≈ 6.9444444444446E-11 | 4 | ≈ 2.7777777777778E-10 |
1.5 | ≈ 1.0416666666667E-10 | 4.5 | ≈ 3.1250000000001E-10 |
2 | ≈ 1.3888888888889E-10 | 5 | ≈ 3.4722222222223E-10 |
2.5 | ≈ 1.7361111111112E-10 | 5.5 | ≈ 3.8194444444445E-10 |
3 | ≈ 2.0833333333334E-10 | 6 | ≈ 4.1666666666668E-10 |
Hubble length | light-years |
---|---|
1 | ≈ 14 400 000 000 |
6.9444444444446 × 10-11 | ≈ 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 …) |