Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 69American Philosophical Society, 1930 |
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... give us room and we shall see what we can do . Seventh Mystery : What are these baffling dwarf stars that are found in the neighborhood of the sun ? They are the size of planets but as massive as stars . They have us stumped for the ...
... give us room and we shall see what we can do . Seventh Mystery : What are these baffling dwarf stars that are found in the neighborhood of the sun ? They are the size of planets but as massive as stars . They have us stumped for the ...
Сторінка 411
... give a mean value of 0.017 km . per sec . for stars one parsec distance . In other words , stars 60 parsecs or 200 light years distance would give a rotational effect of 1 km . per sec . At this rate the fifth magnitude O to B2 stars ...
... give a mean value of 0.017 km . per sec . for stars one parsec distance . In other words , stars 60 parsecs or 200 light years distance would give a rotational effect of 1 km . per sec . At this rate the fifth magnitude O to B2 stars ...
Сторінка 569
... gives us some en- couragement in the hope that even more of their dreams will eventually become realities . I had hoped to give you some idea of the interest explorers find in polar regions and to have explained also why we seek useful ...
... gives us some en- couragement in the hope that even more of their dreams will eventually become realities . I had hoped to give you some idea of the interest explorers find in polar regions and to have explained also why we seek useful ...
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