photosphere
photosphere — noun
1. the visible, light-emitting outer region of a star — the part of a star that we
the visible, light-emitting outer region of a star — the part of a star that we see as its glowing surface from Earth. This is where the star's energy, produced deep inside, finally escapes into space as visible light.
Using a special telescope, Rin captured detailed images of the Sun's photosphere.
possessive: star's photosphere
Selim saw the Sun's photosphere through a telescope, a glowing surface at 5,500 degrees Celsius.
noun-phrase classifier: glowing surface
During the 2024 total solar eclipse, Eli watched the Moon slowly cover the Sun's photosphere.
Sunspots on the Sun's photosphere mark areas where strong magnetic fields can trigger solar flares.
Dr. Ife told her class that the photosphere is the only star layer we can see directly.
- stellar surface
less precise; can refer to any outer boundary of a star
用法筆記
In astronomy writing, the word is almost always singular and refers to a specific star (e.g., 'the Sun's photosphere'). It is rarely used in everyday conversation outside of science contexts.