This article from NASA talks about the measurement of magentic portals that connect the earth to the sun every 8 minutes, due to their magnetic fields pushing against each other and forming connections.  It is always interesting to see something happening on a such a large scale and with these huge fields that, as the article points out, many people didn’t believe in only 10 years ago.
I find the interaction of the electromagnetic waves on the scale of the solar system, between immensely large objects (here the earth and the sun) to be fascinating.  I spend so much time dealing with such small scale fields - antennas, microwave circuits, where fields are coerced into existence in these carefully designed structures to behave in a certain way.  Then I read articles on fields stretching 100 million miles between the earth and the sun, or the various effects the sun’s fields have on the earth, such as solar flares - fields covering half our solar system, in unbounded space, whose origins are not always clear or understood.  I mean, the earth’s magnetic field seems such a simple field that we take for granted - yet why it exists in the first place is not fully understood - you can’t exactly cut the earth in half and take a peak at it’s cross-section. It has even been shown to have flipped thousands of times over it’s lifetime - also something that we don’t quite understand the reason for.