Tag Archives: SOLAR SYSTEM

What is Astronomy? (x)

(BEING CONTINUED FROM  28/06/18) The Lives of Stars How do you figure out the life history of stars? How can we determine the typical history of a person? We could watch a person live out their whole life. But that … Continue reading

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A NEW DISCOVERY INDICATES RESEARCH FOR HERMES ON LAND

7 Remarkable Lessons from Messenger’s Mission to Mercury Final resting place of the Messenger probe on Mercury, where it crash landed on April 30 while traveling at 8,700 miles per hour. Credit: NASA/APL/CIW Through most of its life, NASA’s scrappy … Continue reading

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Excerpts about The Ringmakers of Saturn 1

DedicatedTo All PeopleIn Peaceful Quest of Knowledge The AuthorNORMAN BERGRUNExecutive. Personal: Born August 4, 1921; Son of Theodore and Naomi Ruth StemmBergrun (both deceased); Married Claire Michaelson; Father of Clark, Jay, Joan.Education: B.S.M.E., Cornell University, 1943; L.L.B., LaSalle University (Extension),1955; … Continue reading

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What is Astronomy? (ix)

(BEING CONTINUED FROM  11/06/17) Solar Neutrinos Stars and their Properties Distance Use trigonometric parallax (triangulation) for nearby stars. Parallax = angle subtended (i.e., covered) by 1 A.U., the distance from Earth to the Sun. (1/2 of the diameter of Earth’s … Continue reading

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What is Astronomy? (viii)

(BEING CONTINUED FROM  15/05/16) Forces The Standard Model predicts that there are Four fundamental forces of Nature. Each of the forces is moderated by a Boson. Gravity is by far the weakest of the forces, but because the 2 nuclear … Continue reading

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What is Astronomy? (vii)

(BEING CONTINUED FROM  15/07/15) The Sun: The Nearest Star Photosphere: The Sun’s visible “surface”. It’s the lowest level of the Sun’s atmosphere. Its diameter is about 1.4 x 106 km (0.5° in the sky). In the core the temperature is … Continue reading

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What is Astronomy? (vi)

(BEING CONTINUED FROM 18/01/14) IV: The Solar System Lecture 8 Telescopes Analysis of light is by far the major way in which astronomers gather information about the Universe. So, we need to collect as much as possible and study it … Continue reading

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