An annular eclipse occurs when the moon, slightly more distant from Earth than on average, moves directly between Earth and the sun, thus appearing slightly smaller to observers’ eyes; the effect is a bright ring, or annulus of sunlight, around the silhouette of the moon. Hinode, a Japanese mission in partnership with NASA, NAOJ, STFC, ESA, and NSC, currently in Earth orbit, is studying the Sun to improve our understanding of the mechanisms that power the solar atmosphere and drive solar eruptions.
Timelapse video shows Hinode’s view of the eclipse. Credit: Hinode/XRT
Hinode, launched in September 2006, uses three advanced optical instruments to further our understanding of the solar atmosphere and turbulent solar eruptions that can impact hardware in orbit and life on Earth.