Fusion depends upon the ____________ nuclear force getting the protons to stick together.
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The __________ year solar cycle includes both peaks in sunsp…
The __________ year solar cycle includes both peaks in sunspot numbers and the magnetic polarity reversals.
Compared to the underlying photosphere and chromosphere, the…
Compared to the underlying photosphere and chromosphere, the corona is __________ in temperature.
At its current rate of consuming hydrogen, the Sun can stabl…
At its current rate of consuming hydrogen, the Sun can stably shine for__________ .
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?
Methane drives the weather of Titan, for there it can be liq…
Methane drives the weather of Titan, for there it can be liquid, solid, or gas.
Unlike the nuclear reactions in the Sun, everyday chemical r…
Unlike the nuclear reactions in the Sun, everyday chemical reactions involve only the electromagnetic forces.