Stars are luminous spheres of plasma held together by gravity that produce heat, light, and radiation. They are composed largely of gas and plasma and are responsible for distributing heavy elements throughout the universe. The nearest star to Earth is our Sun. Constellations are specific areas of the celestial sphere defined by groups of prominent stars that make identifiable patterns, with some famous examples being Orion and Cassiopeia.

2. STAR
• LUMINOUS SPHERE OF PLASMA HELD TOGETHER BY ITS OWN GRAVITY
• PRODUCES HEAT, LIGHT, ULTRAVIOLET RAYS, X-RAYS, AND OTHER FORMS OF
RADIATION
• COMPOSED LARGELY OF GAS AND PLASMA
• RESPONSIBLE FOR THE MANUFACTURE AND DISTRIBUTION OF HEAVY ELEMENTS
SUCH AS CARBON, NITROGEN, AND OXYGEN

3. • THE MOST PROMINENT STARS WERE GROUPED INTO CONSTELLATIONS AND
ASTERISMS, AND THE BRIGHTEST STARS GAINED PROPER NAMES
• THE NEAREST STAR TO EARTH IS THE SUN

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5. CONSTELLATION
• SPECIFIC AREA OF THE CELESTIAL SPHERE AS DEFINED BY IAU
• CURRENTLY, THEY ARE 88 CONSTELLATIONS
• FAMOUS EXAMPLES OF CONSTELLATIONS ARE ORION AND CASSIOPEIA

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22. WHITE DWARF >
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23. RED GIANT
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24. RED SUPERGIANT
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25. (1) SUPERNOVA
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26. (2) SUPERNOVA
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