(also called 1 micron) The quectometre (SI symbol: qm) is a unit of length in the metric system equal to 10−30 metres.
The zeptometre (SI symbol: zm) is a unit of length in the metric system equal to 10−21 metres.
The femtometre (SI symbol: fm) is a unit of length in the metric system equal to 10−15 metres.
The picometre (SI symbol: pm) is a unit of length in the metric system equal to 10−12 metres (1/1000000000000 m = 0.000000000001 m).
The nanometre (SI symbol: nm) is a unit of length in the metric system equal to 10−9 metres (1/1000000000 m = 0.000000001 m).
The micrometre (SI symbol: μm) is a unit of length in the metric system equal to 10−6 metres (1/1000000 m = 0.000001 m).
The decimetre (SI symbol: dm) is a unit of length in the metric system equal to 10−1 metres (1/10 m = 0.1 m).
The megametre (SI symbol: Mm) is a unit of length in the metric system equal to 1000000 meters (106 m).
To help compare different distances this section lists lengths starting at 1010 meters (10 gigameters (Gm) or 10 million kilometers, or 0.07 astronomical units).
To help compare distances at different orders of magnitude this section lists lengths starting at 1011 meters (100 gigameter or 100 million kilometers or 0.7 astronomical units).
To help compare different distances, this section lists lengths starting at 1012 m (1 Tm or 1 billion km or 6.7 astronomical units).
To help compare different distances this section lists lengths starting at 1013 m (10 Tm or 10 billion km or 67 astronomical units).
To help compare different distances this section lists lengths starting at 1014 m (100 Tm or 100 billion km or 670 astronomical units).
To help compare different distances this section lists lengths starting at 1015 m (1 Pm or 1 trillion km or 6685 astronomical units (AU) or 0.11 light-years).
To help compare different orders of magnitude, this section lists distances starting at 10 Zm (1022 m or 1.1 million light-years).
To help compare different orders of magnitude, this section lists distances starting at 100 Zm (1023 m or 11 million light-years).
[55] To help compare different orders of magnitude, this section lists distances starting at 1 Ym (1024 m or 105.702 million light-years).
To help compare different orders of magnitude, this section lists distances starting at 10 Ym (1025 m or 1.1 billion light-years).
To help compare different orders of magnitude, this section lists distances starting at 100 Ym (1026 m or 11 billion light-years).
[55] To help compare different orders of magnitude, this section lists distances starting at 1 Rm (1027 m or 105.7 billion light-years).
Objects of sizes in different order of magnitude (at inconsistent intervals)
Graphical overview of sizes
Planets of the Solar System to scale
Comparison of sizes of semiconductor manufacturing process nodes with some microscopic objects and visible light wavelengths. At this scale, the
width of a human hair
is about 10 times that of the image.
[
70
]
Comparison of sizes of semiconductor manufacturing process nodes with some microscopic objects and visible light wavelengths. At this scale, the
width of a human hair
is about 10 times that of the image.
[
78
]
The silk for a spider's web is 5–7 μm (0.00020–0.00028 in) wide.
Fog particles are around 10–50 μm (0.00039–0.00197 in) long.
Planets from Venus up to Uranus have diameters from ten to one hundred million meters. Top row:
Uranus
(left),
Neptune
(right); middle row:
Earth
(left),
Sirius B
(center), and
Venus
(right), to scale.
Rigel and Aldebaran (top left and right) compared to smaller stars, the Sun (very small dot in lower middle, with orbit of Mercury as yellow ellipse) and transparent sphere with radius of one light-minute
From largest to smallest: Jupiter's orbit, red supergiant star Betelgeuse, Mars' orbit, Earth's orbit, star R Doradus, and orbits of Venus, Mercury. Inside R Doradus's depiction are the blue supergiant star Rigel and red giant star Aldebaran. The faint yellow glow around the Sun represents one light-minute. Click image to see more details and links to their scales.
Eight things in the terameter group
Comparison of size of the Kuiper belt (large faint torus) with the star VY Canis Majoris (within Saturn's orbit), Betelgeuse (inside Jupiter's orbit) and R Doradus (small central red sphere) together with the orbits of Neptune and Uranus, to scale. The yellow ellipses represent the orbits of each planet and the dwarf planet Pluto.
Sedna's orbit (left) is longer than 100 Tm, but other lengths are between 10 and 100 Tm:
Comet Hale-Bopp
's orbit (lower, faint orange); one
light-day
(yellow spherical shell with yellow Vernal point arrow as radius); the heliosphere's
termination shock
(blue shell); and other arrows show positions of
Voyager 1
(red) and
Pioneer 10
(green). Click on image for larger view and links to other scales.
The largest yellow sphere indicates one light month distance from the Sun. Click the image for larger view, more details and links to other scales.
Objects with size order of magnitude 1e16m: Ten light-years (94.6
Pm
) radius circle with yellow Vernal Point arrow; Bubble Nebula (NGC 7635), left; Dumbbell Nebula (NGC 6853), right; one light-year shell lower right with the smaller Cat's Eye Nebula (NGC_6543) and Barnard 68 adjacent.
1e16m lengths: Ten light-years (94.6
Pm
) yellow shell; Sirius below right; BL Ceti below left; Proxima and Alpha Centauri upper right; light-year shell with Comet 1910 A1's orbit inside top right
Lengths with order of magnitude 1e17m: yellow Vernal Point arrow traces hundred light-year radius circle with smaller ten light-year circle at right; globular cluster Messier 5 in background; 12 light-year radius Orion Nebula middle right; 50-light-year-wide view of the Carina Nebula bottom left; Pleiades cluster and Bubble nebula with similar diameters each around 10 light-years bottom right; grey arrows show distances from Sun to stars Aldebaran (65 light-years) and Vega (25 light-years)
Lengths with order of magnitude 1e18m: thousand light-year radius circle with yellow arrow and 100 light-year circle at right with globular cluster Messier 5 within and Carina Nebula in front; globular cluster Omega Centauri to left of both; part of the 1,400-light-year-wide Tarantula Nebula fills the background
The universe within one billion light-years of Earth
