File: A SpaceX Falcon 9 rocket stands in launch position at Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base at sunset. Image: SpaceX
Update March 20, 6:14 p.m. EDT (2214 UTC): SpaceX adjusted the T-0 liftoff time.
Space weather is a fascinating subject, but one we still have a lot to learn about. One of the main components of it is the active regions (ARs) of the Sun. These huge concentrations of magnetic fields show up throughout the Sun’s photosphere and are the primary source of solar flares and coronal mass ejections (CMEs). They can be simple pairings of magnetic flux or huge, magnetically complex tangles that spend weeks creating massive solar storms before dissipating. But tracking the longest lived of these ARs has been a headache for solar physicists, and a recent paper by Emily Mason and Kara Kniezewski, published in The Astrophysical Journal, both dives into this tracking problem and uncovers some interesting features of the Sun’s most persistent ARs.
