Astronomy | Definition, History, Discoveries, & Facts | Britannica
网页2024年7月26日 · Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena. Since the late 19th century, astronomy has expanded to include astrophysics, the application of physical and chemical knowledge to an understanding of the nature of celestial objects.
Astronomy Definition & Meaning - Merriam-Webster
网页The meaning of ASTRONOMY is the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties. The Difference Between Astronomy and Astrology.
Astronomy - Wikipedia
网页Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.
ASTRONOMY | English meaning - Cambridge Dictionary
网页the scientific study of the universe and of objects that exist naturally in space, such as the moon, the sun, planets, and stars. Examples. Unlike astronomy, astrology …
What is Astronomy? | AMNH - American Museum of Natural History
网页Astronomy is the study of everything in the universe beyond Earth’s atmosphere. That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars . It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles.
ASTRONOMY | definition in the Cambridge English Dictionary
网页the scientific study of the universe and of objects that exist naturally in space, such as the moon, the sun, planets, and stars. Examples. Unlike astronomy, astrology …
Astronomy: Everything you need to know | Space
网页2023年7月25日 · Astronomy is one of the oldest scientific disciplines that has evolved from the humble beginnings of counting stars and charting constellations with the naked eye …
ASTRONOMY Definition & Meaning - Dictionary.com
网页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 ...
ASTRONOMY中文(简体)翻译：剑桥词典 - Cambridge Dictionary
网页the scientific study of the universe and of objects that exist naturally in space, such as the moon, the sun, planets, and stars. 天文学. 范例. Unlike astronomy, astrology cannot be described as an exact science. I've always had an interest in astronomy. These ancient scholars were steeped in poetry and painting, as well as maths and astronomy.
What exactly is astronomy? - American Astronomical Society
网页Astronomy is a physical science concerned with the smallest particles and the largest natural objects. The name Astronomy comes from the Greek roots Astr- and -nomia to literally mean "name stars". Astronomy is the study of everything outside of the earth's atmosphere and their chemical and physical properties.
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