The only particle we can directly observe coming out of the Sun’s core is the __________ .
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The sunspot cycle averages about 11 years.
The sunspot cycle averages about 11 years.
The __________ year solar cycle includes both peaks in sunsp…
The __________ year solar cycle includes both peaks in sunspot numbers and the magnetic polarity reversals.
Fusion depends upon the ____________ nuclear force getting t…
Fusion depends upon the ____________ nuclear force getting the protons to stick together.
At its current rate of consuming hydrogen, the Sun can stabl…
At its current rate of consuming hydrogen, the Sun can stably shine for__________ .
Compared to the underlying photosphere and chromosphere, the…
Compared to the underlying photosphere and chromosphere, the corona is __________ in temperature.
The corona can only be glimpsed from Earth during a ________…
The corona can only be glimpsed from Earth during a __________ .
Which of these are not associated with the active Sun?
Which of these are not associated with the active Sun?
Pluto is most similar to
Pluto is most similar to
What natural barrier prevents two protons from colliding and…
What natural barrier prevents two protons from colliding and fusing?