Astronomy Picture of Day: Sunspot Region 30# Astronomy - 天文
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Sunspot Region 30
Explanation: The solar active region designated number 10030 (or simply region 30) is
now appearing on the visible hemisphere of the closest star. Dwarfed by the Sun's disk, the
group of sunspots which make up region 30 actually cover an enormous area -- nearly 10
times the size of Earth. The panels above were recorded July 15, 16, and 17 (top to bottom)
by the MDI instrument on the space-based SOHO Observatory as the solar rotation slowly
carried the large, dynamic sunspot gro
Explanation: The solar active region designated number 10030 (or simply region 30) is
now appearing on the visible hemisphere of the closest star. Dwarfed by the Sun's disk, the
group of sunspots which make up region 30 actually cover an enormous area -- nearly 10
times the size of Earth. The panels above were recorded July 15, 16, and 17 (top to bottom)
by the MDI instrument on the space-based SOHO Observatory as the solar rotation slowly
carried the large, dynamic sunspot gro