SP-402 A New Sun: The Solar Results From Skylab

CHANGING FACES OF THE SUN, one for each of the 59 days spent in orbit by Skylab's second crew, are shown as a solar diary in the next three pages.-continued

CHANGING FACES OF THE SUN, one for each of the 59 days spent in orbit by Skylab's second crew, are shown as a solar diary in the next three pages. Two pages would have sufficed for the 28 day record of the first crew the third crew, in orbit for 84 days, would have needed six. During the 59 days shown here, the Sun spun more than two full turns around its axis. Solar rotation is apparent in these daily portraits, as are real changes on the Sun. Each photo shows the lower chromosphere in the red (Capital H, subscript Greek letter alpha ) line of hydrogen; bright features are centers of activity on the Sun. Skylab's astronauts watched these constant changes in similar Capital H, subscript Greek letter alpha pictures on live television at their solar telescope control console.

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