megameters
Thousand-kilometer measurements
Megameters are units of length equal to one million meters, or about 621 miles.
The prefix mega- multiplies the base unit by 10⁶.
Megameters rarely appear in everyday usage—kilometers suffice for earthbound distances—but prove useful for astronomical or planetary scales: Earth's diameter is approximately 12.7 megameters.
Astronomical distance measure
- parsecsDistance units for astronomy
- cosmicPertaining to the universe
- interstellarBetween celestial bodies
- galaxyGravitationally bound stellar mass
universe · celestial · nebulae · quasars · exoplanet · orbit · Hubble · telescope
Extremely great in size
- immenseExtremely large in scope
- enormousExtremely large in scale
- colossalExtremely large in scale
- expansiveCovering a large area
macroscopic · continental · global · magnitude · scope · extent · large-scale
light-year
Astronomical distance measure
- parsecsDistance units for astronomy
- cosmicPertaining to the universe
- interstellarBetween celestial bodies
galaxy · universe · celestial · nebulae · quasars · exoplanet · orbit · Hubble · telescope · observatory
vast
Extremely great in size
expansive · macroscopic · continental · global · magnitude · scope · extent · large-scale
length
Measure of extent
- diameterDistance across through center
- gaugeStandard of measurement
- calibrationAdjusting for measurement accuracy
scale · precision · unit · conversion · SI · prefix · magnitude · notation
continent
Large connected landmass
rift · cordillera · equator · meridian · longitude · latitude · circumference · mantle · crust · geoid
megametersnanometers
Billionths of meters
picometers · millimeters · femtometers · micrometers · angstroms