Familiar lessons on astronomy ; designed for the use of children and youth .. (1848)
Fowler, Lydia F. (Lydia Folger), 1823-1879 · New York, Fowlers & Wells · leaf 147
he earth. As we look into the heavens, we see, as 4. What causes this ? What is an illustration of this ? 5. What is saidof the nebula in Orion ? 6. What are nebulae stars ? 7. What are annu-lar nebulse ? 8. What are planetary nebulae ? What is said of theirsize? 9. What appearance do shooting… … NEBULA. 9. What question naturally arises as we look into the heavens ?12* 138 NEBULA. 10. Some suppose that they are luminous gas ;others, that they are caused by electricity; others,that they are luminous bodies, which, like the comets,revolve around the sun, and that their appearance canbe…
Astronomy
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