問題一覧
1
Are diverse entities that populate the universe, ranging from individual stars and planets the entire galaxies and cosmological structures
Celestial objects
2
Are massive, luminous spheres of Plasma that emits light and heat due to nuclear fusion reactions occurring in their cores
Stars
3
are the most common type of stars and include a wide range of sizes and temperature.
main sequence stars
4
Are stars that have exhausted the hydrogen fuel in their cores.
Giant stars
5
are even more massive and luminous than giant stars. They are often found at the end of their evolutionary path, right before they explode in a supernova.
Supergiant stars
6
are the remnants of low- to medium-mass stars after they have exhausted their nuclear fuel.
White dwarfs
7
are the collapsed cores of massive stars that have undergone a supernova explosion.
Neutron stars
8
are regions of spacetime where gravity is so strong that nothing, not even light, can escape.
Black holes
9
is a fundamental tool in the field of astronomy that graphically represents the properties of stars, particularly their luminosity (brightness) and temperature (color or spectral type). Named after astronomers Ejnar Hertzsprung and Henry Norris Russell.
Hertzsprung-Russell diagram
10
is a measure of how bright a celestial object appears to an observer on Earth.
Apparent Magnitude
11
is a measure of the intrinsic brightness or luminosity of a celestial object.
Absolute magnitude
12
is a widely used classification scheme for categorizing stars based on their spectral characteristics (William Wilson Morgan and Philip C. Keenan). This system is commonly used by astronomers to describe the spectral type of stars, which provides important information about a star's temperature, composition, and evolutionary stage.
Morgan-keenan system
13
is the star at the center of our solar system, and it plays a fundamental role in providing heat, light, and energy to the planets, including Earth.
Sun
14
what is the star type of sun?
Yellow dwarf
15
Age of the sun.
4.5 billion years
16
distance of the sun.
26,000,000 light years
17
Give the 4 solar structure.
Core Radiative Zone Convective Zone Photosphere
18
it is the one of the type of solar structure where the nuclear fusion converts hydrogen into helium that releasing enormous energy.
Core
19
It is the region above the core where energy from fusion photons takes thousands of years to reach the surface.
Radiative zone
20
it is where heat is transported by the motion of hot plasma.
Convective zone
21
it is the visible surface of the Sun where sunlight is emitted. It appears as a yellowish disk.
Photosphere
22
Give the two solar atmosphere.
Chromosphere Corona
23
it is a layer above the photosphere , known for its reddish color.
chromosphere
24
It is the outermost layer of the Sun's atmosphere, visible as a halo during total solar eclipses.
corona
25
Give the four solar activity.
sunspots solar flares solar wind solar prominence
26
it is the dark , cooler areas on the sun's surface caused by magnetic activity.
Sunspots
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It is the sudden , intense burst of energy and radiation from the sun's surface.
solar flares
28
It is the stream charged particles that flows from the sun, influencing space weather
Solar wind
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also known as a solar filament when observed against the solar disk.
Solar prominence
30
it is the short cut word known for solar eclipse
SME