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#31
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An astronomical divide
Quadibloc wrote:
On Tuesday, April 28, 2015 at 10:52:47 AM UTC-6, Mike Collins wrote: if the Earth had no axial tilt the whole surface would be covered in ice. In that case, it's a good thing we didn't move the Moon in order to move the Earth into a sensible orbit. John Savard Brad Guth seems to have wanted the Moon to be moved to L1 to help cool the Earth. However the simulations in one of the papers referenced in the link suggest that life might still be possible without the stabilising effect if the Moon on the axial tilt. |
#32
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An astronomical divide
The Polar day/night cycle and the surface rotation behind it as distinct from the daily day/night cycle was hampered by the notion of axial precession.. The student or interested adult would hardly be capable or familiar with the necessary modifications required to push the dual surface rotations into wider circulation let alone account for the precession of the Equinoxes as a flaw in the original work principles of the old astronomers such as seen in Huygens -
"Here take notice, that the Sun or the Earth passeth the 12. Signes, or makes an entire revolution in the Ecliptick in 365 days, 5 hours 49 min. or there about, and that those days, reckon'd from noon to noon, are of different lenghts; as is known to all that are vers'd in Astronomy" Huygens http://adcs.home.xs4all.nl/Huygens/06/kort-E.html What a wonderful opportunity to work through the intricate principles and introduce more productive ones however living in an era where researchers won't accept the number of times the planet turns within an orbital circumference makes such an endeavor impossible. Stealing money from the taxpayer is fine if that is all the empirical 'astronomers' want to do but it doesn't excuse the normal person who may dwell on topics such as the polar day/night cycle and how it plays out for the observer at the North and South poles. |
#33
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An astronomical divide
On Thursday, April 30, 2015 at 5:11:16 AM UTC-6, Mike Collins wrote:
Quadibloc wrote: In that case, it's a good thing we didn't move the Moon in order to move the Earth into a sensible orbit. Brad Guth seems to have wanted the Moon to be moved to L1 to help cool the Earth. That could be, but of course I was thinking of the late Alexander Abian. John Savard |
#34
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An astronomical divide
Genuine astronomers do not go out to impress someone else but rather are impressed by observations themselves so it turns into a lot of lively fun when all is said and done in the same way music livens up existence.
It may be that the division of the planet's day/night cycles arising from separate causes may be a lot more difficult for observers to extrapolate even though time lapse footage of Uranus affirms it along with the necessity to explain the polar day/night separately to the cause of the 24 hour cycle. The hindrance of axial precession generally prevents the appreciation as to why temperatures rise and fall in two separate ways for any given location where the Sun is seen each day whereas the North/South poles experiences a single fluctuation by virtue of a single,uneven rotation to the central Sun. People get on with their lives without dwelling on the motions of the Earth or its position in space as it turns and moves around the Sun even though the rhythms of their bodies merge with the onset of night, the temperature rises and dawn, the warmth of the coming summer months. If anything this is a central theme that runs through these posts that for all the bluffing and jargon out there, nothing is more intimate or more fun than knowing how or bodies respond to the planet's motions. |
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