Image from page 25 of "Tribune popular science" (1874)
Title: Tribune popular science
Authors: Agassiz, Louis, 1807-1873
Publisher: Boston : Henry L. Shepard and Co.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library
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we see ; but in point of fact, Jupiterdues not look white. Therefore you have tho certaintyalmost that there must ba an Inherent light in it, and ifit be Inherent light, if thecenterof tho planet elves itout, It must be at a heat corresponding to that oi red-hot Iron. The satellites of Jupiter may be bodies well lighted,though not intended to supply light to the planet. Alltho satellites cannot supply tho planet with 1-lttth ofthe light which we get from the full moon. They areilluminated by the small sun of Jupiter, which is butthe oue-twenty-fifth part of our sun in size. We will havoanother picture of Jupiter. You .see how processes aretaking place which seem to have led to tho uprisingfrom some interior surface, perhaps a surface far downbelow the atmospheric envelope, the uprising of a greatcloudy mass, surrounded by u dark border, which wasdistinctly visible to Prof. Mayt-r for hours. Everything,as I think, seems to show us that iu Jupiter we have a*scene of tremendous activity.
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THE RING STSTEM OF BATtTnV. Now to his brother giant, tho planet Saturn, with Msglorious ring system. Those belts on Saturn correspondiu kind to those that exist on Jupiter; and I might ap-ply the argument on Jupiter to Saturn without anyfurther explanation. This great bolt of Saturn during thowhole long year of Saturn—lasting 29 years of ours—remains persistently equatorial. Now the axis ofSaturn is inclined very much as the earths axisis inclined, but the equatorial belt never shifts, follow-ing tho sun, as ours does, along the ecliptic. It seeingby its position to show that it is produced by a force re-siding iu tho planet itself. Now there is one argumentderived from the ring of Saturn. Tho<e rings havo beendescribed by Browster as glorious bodies reflecting lighton Saturn, and making up for want of tiie sun. Insteadof doing that, those rings* cut off tho sunshine.You will see how tho rincrs appear whenthey are seen edgewise. Tho planet Is in tlm full lightof tho sun, and t
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