sunrise
Sign in to savethumb|Sunrise seen over the Atlantic Ocean through [[cirrus clouds on the Jersey Shore at Spring Lake, New Jersey, U.S.]] Sunrise (or sunup) is the moment when the upper rim of the Sun appears on the horizon in the morning, at the start of the Sun path. The term can also refer to the entire process of the solar disk crossing the horizon.
AI overview
Sunrise is the moment when the Sun first appears above the horizon in the morning, marking the start of the day. It matters because it represents a natural turning point in Earth's rotation that affects light, temperature, and the daily rhythms of life on our planet.
AI-generated from the Wikipedia summary — may contain errors.
Article
12 sectionsContents
- Terminology
- Measurement
- Angle with respect to horizon{{anchor|Angle}}
- Time of day
- Location on the horizon
- Hemispheric symmetry
- Appearance
- Colors
- Optical illusions and other phenomena
- See also
- References
- External links
thumb|Sunrise seen over the Atlantic Ocean through [[cirrus clouds on the Jersey Shore at Spring Lake, New Jersey, U.S.]] Sunrise (or sunup) is the moment when the upper rim of the Sun appears on the horizon in the morning, at the start of the Sun path. The term can also refer to the entire process of the solar disk crossing the horizon.
==Terminology== Although the Sun appears to "rise" from the horizon, it is actually the ''Earth's motion that causes the Sun to appear. The illusion of a moving Sun results from Earth observers being in a rotating reference frame; this apparent motion caused many cultures to have mythologies and religions built around the geocentric model, which prevailed until astronomer Nicolaus Copernicus formulated his heliocentric model in the 16th century.