Longman Dictionary of Contemporary English homepage

Topic: ASTRONOMY

Explore ASTRONOMY Topic

astro- astronaut astronomical astronomy astrophysics black hole celestial comet constellation corona cosmic cosmology dead earth eclipse(n) eclipse(v) galactic galaxy infinity Jupiter launch(v) launch(n) lunar magnitude Mars Mercury meteor month moon NASA nebula Neptune new moon nova observatory orbit(v) orbit(n) outer space phase planet plasma Pluto quadrant quarter ring rocket satellite Saturn sea solar solar system space spacecraft star stellar sun supernova telescope terrestrial Venus wax world zenith

Show all entries from Topic: ASTRONOMY

Date: 1200-1300
Language: Old French
Origin: astronomie, from Latin astronomia, from Greek, from astro- ( ASTRO-) + -nomia 'arranging'

astronomy

noun
     
as‧tron‧o‧my [uncountable]
the scientific study of the stars and planets [↪ astrology]
WORD FOCUS: space WORD FOCUS: space
vehicles used in space: spaceship, spacecraft, rocket, (space) shuttle, probe, satellite, space station

someone who travels in space: astronaut, cosmonaut Russian

parts of a rocket's journey: countdown, launch, blast-off/take-off/lift-off, leaving the earth's atmosphere, going into orbit, re-entering the earth's atmosphere, splashdown/touchdown

places and things in space: planet, moon, star, sun, satellite, solar system, constellation, galaxy, universe, the cosmos, black hole, quasar, comet, meteor, asteroid

the study of space: astronomy
space

See also
space
 
Word of the Day
The ASTRONOMY
Word of the Day is:

Other related topics