astronomy

[uh-stron-uh-mee]

noun

1. the science that deals with the material universe beyond the earth's atmosphere.

astronomy

/ əˈstrɒnəmɪ /

noun

1. the scientific study of the individual celestial bodies (excluding the earth) and of the universe as a whole. Its various branches include astrometry, astrodynamics, cosmology, and astrophysics

astronomy

1. The scientific study of the universe and the objects in it, including stars, planets, nebulae, and galaxies. Astronomy deals with the position, size, motion, composition, energy, and evolution of celestial objects. Astronomers analyze not only visible light but also radio waves, x-rays, and other ranges of radiation that come from sources outside the Earth's atmosphere.

astronomy

1. The science that deals with the universe beyond the Earth. It describes the nature, position, and motion of the stars, planets, and other objects in the skies, and their relation to the Earth.

Word History and Origins

Origin of astronomy¹

First recorded in 1175–1225; Middle English astronomie, from Anglo-French, from Latin astronomia, from Greek; equivalent to astro- + -nomy

Word History and Origins

Origin of astronomy¹

C13: from Old French astronomie, from Latin astronomia, from Greek; see _astro- , _-nomy

Example Sentences

"We have found so many exoplanets at this point that discovering a new one is not such a big deal," said co-author Paul Robertson, UC Irvine associate professor of physics & astronomy.

Read more on Science Daily

"Fugaku is used for research in a wide range of computational science fields, such as astronomy, meteorology, and drug discovery, contributing to the resolution of many societal problems," said Yamazaki.

Read more on Science Daily

"We're realizing that many stars near the Sun are part of massive extended stellar families with complex structures," said Andrew Mann, co-author and professor of physics and astronomy at UNC-Chapel Hill.

Read more on Science Daily

LHAASO, designed, built, and operated by Chinese scientists, has become a global leader in high-energy cosmic ray research due to its exceptional sensitivity in gamma-ray astronomy and precision cosmic ray measurements.

Read more on Science Daily

"Our astronomy program, called Arcana of the Ancients, focuses on old, metal-poor brown dwarfs as a means of testing our understanding of atmospheric chemistry," said Burgasser.

Read more on Science Daily

Related Words

• astrophysics