11 Years Charting The Edge of The Solar System
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Music credits: “End of Days - Joe Mason Remix” by Connor Shambrook [BMI], Cyrus Reynolds [BMI], Flynn Hase Spence [ASCAP], Joseph Scott Mason [APRA]; “Brainstorming” by Laurent Dury [SACEM]; “Flight of the Leaf Remix” by Julie Gruss [GEMA], Laurent Dury [SAXEM]; “Ticks and Thoughts” by Laurent Dury [SACEM]; “Intimate Journey” by Laurent Vernerey [SACEM], Nicolas de Ferran [SACEM] from Universal Production Music
Complete transcript available.
Far, far beyond the orbits of the planets lie the hazy outlines of the magnetic bubble in space that we call home.
This is the heliosphere, the vast bubble that is generated by the Sun’s magnetic field and envelops all the planets. The borders of this cosmic bubble are not fixed. In response to the Sun’s gasps and sighs, they shrink and stretch over the years.
Now, for the first time, scientists have used an entire solar cycle of data from NASA’s IBEX spacecraft to study how the heliosphere changes over time. Solar cycles last roughly 11 years, as the Sun swings from seasons of high to low activity, and back to high again. With IBEX’s long record, scientists were eager to examine how the Sun’s mood swings play out at the edge of the heliosphere. The results show the shifting outer heliosphere in great detail, deftly sketch the heliosphere’s shape — a matter of debate in recent years, and hint at processes behind one of its most puzzling features. These findings, along with a newly fine-tuned data set, are published in The Astrophysical Journal Supplements on June 10, 2020.
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