When strong solar winds are displaced poleward by our magnetic fields, we get
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What is the event horizon of a black hole?
What is the event horizon of a black hole?
A +6.0 magnitude star is brighter than a +3.0 magnitude star…
A +6.0 magnitude star is brighter than a +3.0 magnitude star.
A loop of gas following the magnetic field lines between sun…
A loop of gas following the magnetic field lines between sunspots’ poles is
Main sequence stars lie at the top right corner of the H-R d…
Main sequence stars lie at the top right corner of the H-R diagram.
The sunspot cycle averages about 11 months.
The sunspot cycle averages about 11 months.
The outward pressure of hot gas in the Sun
The outward pressure of hot gas in the Sun
A meteor is
A meteor is
Typically a granule in the photosphere is about
Typically a granule in the photosphere is about
Like Jupiter’s other icy moons, Europa is covered with crate…
Like Jupiter’s other icy moons, Europa is covered with craters.