The Type II Supernova That Created the Crab Nebula Was

question 65

Multiple Choice

The Type II supernova that created the Crab Nebula was seen by Chinese and Arab astronomers in the year 1054 CE. Because the star is 6,500 light-years away from us, we know the star exploded in the year:

• A) 554 CE
• B) 1054 CE
• C) 1054 BCE
• D) 5447 BCE
• E) 7555 BCE

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Definitions:

Fifth Intercostal Space

The area between the fifth and sixth ribs, often used as a reference point for certain medical procedures or examinations.

Midclavicular Line

An imaginary vertical line drawn from the midpoint of the clavicle downward, often used as a reference point in medical examinations.

Precordial Leads

Electrodes placed on the chest in specific positions during an ECG to record the heart's electrical activity from the frontal plane, providing insight into the heart's function.

Heart's Electrical Activity

The series of electrical impulses generated by the heart that trigger cardiac muscle contraction, essential for maintaining heart rhythm and function.