Definition of astronomy
: the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties
Recent Examples of astronomy from the Web
The findings, described in a paper accepted to Physical Review Letters, cement the idea that gravitational-wave astronomy – a whole new way to observe some of the most powerful events in the universe – is here to stay.
Dr. Eugene Parker, from the University of Chicago's department of astronomy and astrophysics, debuts his Parker Solar Probe on May 31, 2017.
Yang’s work stood out even among other excellent projects, said Len Duda, who just retired from the Sandia National Laboratories in Albuquerque, N.M., and served as a coach for the physics and astronomy division at the Intel competition.
This is the eighth annual Mall event that organizer Don Lubowich, astronomy outreach coordinator at Hofstra University, Hempstead, N.Y., has assembled.
Meantime, Ary hosted a local TV show in Fort Worth talking about astronomy and the space program while working as museum director at the planetarium.
But the disparity persists, in astronomy and likely elsewhere, and even in the very study that examined it.
The physics department at Boise State University hosts a free public astronomy program on the first Friday of every month at 7:30 p.m. in the Multi-Purpose Classroom Building, room 101.
Never let anyone tell you that astronomy is not an art.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astronomy'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of astronomy
Middle English astronomie, from Anglo-French, from Latin astronomia, from Greek, from astr- + -nomia -nomy
First Known Use: 12th century
ASTRONOMY Defined for English Language Learners
Definition of astronomy for English Language Learners
: the scientific study of stars, planets, and other objects in outer space
ASTRONOMY Defined for Kids
Definition of astronomy for Students
: a science concerned with objects and matter outside the earth's atmosphere and of their motions and makeup
Seen and Heard
What made you want to look up astronomy? Please tell us where you read or heard it (including the quote, if possible).