megameter
Thousand kilometers combined
A megameter is one million meters, or about 621 miles.
The unit appears almost exclusively in scientific contexts, particularly astronomy and earth sciences, where ordinary distance measures become unwieldy: The Earth's diameter is roughly 12.7 megameters.
Abbreviated Mm.
Astronomical distance measure
- parsecInterstellar length measure
- galaxyGravitationally bound stellar mass
- interstellarBetween celestial bodies
- cosmicPertaining to the universe
nebula · exoplanet · Hubble · observatory · telescope · astrophysics · celestial · universe
Extremely great in size
- immenseExtremely large in scope
- enormousExtremely large in scale
- colossalExtremely large in scale
- expansiveCovering a large area
boundless · extensive · monumental · massive · scale · magnitude · incomprehensible · surveying
Large connected landmass
- oceanMassive saltwater body
- equatorMidpoint circle of rotation
- circumferenceCircle's outer measurement
- mantleCovering or wrap
crust · planetary · longitude · latitude · hemisphere · meridian · geodesy · antipode
Ten-meter measurement unit
- micrometerMillionth of a meter
- picometerTrillionth of a meter
- femtometer10⁻¹⁵ meters
- prefixRoot-modifying front element
light-year
Astronomical distance measure
- parsecInterstellar length measure
- galaxyGravitationally bound stellar mass
- interstellarBetween celestial bodies
cosmic · nebula · exoplanet · Hubble · observatory · telescope · astrophysics · celestial · universe · space-time
vast
Extremely great in size
expansive · boundless · extensive · monumental · massive · scale · magnitude · incomprehensible · surveying · cartography
continent
Large connected landmass
- oceanMassive saltwater body
- equatorMidpoint circle of rotation
- circumferenceCircle's outer measurement
mantle · crust · planetary · longitude · latitude · hemisphere · meridian · geodesy · antipode · global
decameter
Ten-meter measurement unit
- micrometerMillionth of a meter
- picometerTrillionth of a meter
- femtometer10⁻¹⁵ meters
megameternanometer
Metric unit, billion-fold smaller
picometer · femtometer · micrometer · angstrom · millimeter
meter, mega, perimeter, diameter, kilometer, centimeter, millimeter, megabyte, centimetre