If Earth rotated from East to West on its axis? The sun would rise from west :P
That would only happen when the sun rises from the west.
Nice thought !
@MercySoul said in #1:
> If Earth rotated from East to West on its axis? The sun would rise from west :P
i recently saw ur name in book of world records u got that for ur imagination power
> If Earth rotated from East to West on its axis? The sun would rise from west :P
i recently saw ur name in book of world records u got that for ur imagination power
Noone got my joke I believed it to be a hit
@MercySoul said in #1:
> If Earth rotated from East to West on its axis? The sun would rise from west :P
True!
I have another WEIRD fact for you:
Assuming that nothing else changes about the earth-sun-system, inhabitants of such a counterrotating world would also experience two more sunrises per year!
In other words, their calendar would not have 365 (solar) days in a year like our's, it would instead have 367 (solar) days in a year.
In one solar day (the time taken until the sun appears to be in the same spot in the sky again) our earth rotates by slightly over 360º (with respect to the distant stars), because the earth's position with respect to the sun changed within a day due to the orbit of the earth around the sun.
On a counterrotating world the earth would only need to rotate by slightly under 360º in order to make the sun appear in the same spot in the sky again, because there the orbit of the earth around the sun actually helps.
In both cases the earth needs slightly under 24 hours for one 360º rotation (with respect to the distant stars). That period of time is called the "sidereal day", roughly meaning "star day": en.wiktionary.org/wiki/sidereal
en.wikipedia.org/wiki/Sidereal_time#Sidereal_day
The length of the solar day however depends on the direction of rotation of the earth around its axis (west to east or east to west) AND on the direction of the earth's orbit around the sun (counterclockwise or clockwise).
The solar day on our earth is longer than the sidereal day (time taken for 360º rotation with respect to the stars), because both directions are the same, the earth rotates west to east (also called counterclockwise) and its orbit around the sun is counterclockwise as well (working against it in a way).
The solar day on the counterrotating earth would however be shorter than the sidereal day, because the directions are different!
The counterrotating earth rotates east to west (or clockwise) but still orbits the sun counterclockwise (working together). Meaning that the time between consecutive sunrises is shorter than a sidereal day!
If my explanation is not good enough, simply draw a diagram of two planets with the same period, one rotating counterclockwise, one rotating clockwise around their own axis, both going around a star counterclockwise (in the same direction, at the same distance and orbital velocity). From such a diagram it's pretty easy to see that the second planet will always have exactly two more solar days than the first (within one orbit around the star, i.e. one sidereal year) no matter what period (length of sidereal day) you choose.
I think that's super cool!
> If Earth rotated from East to West on its axis? The sun would rise from west :P
True!
I have another WEIRD fact for you:
Assuming that nothing else changes about the earth-sun-system, inhabitants of such a counterrotating world would also experience two more sunrises per year!
In other words, their calendar would not have 365 (solar) days in a year like our's, it would instead have 367 (solar) days in a year.
In one solar day (the time taken until the sun appears to be in the same spot in the sky again) our earth rotates by slightly over 360º (with respect to the distant stars), because the earth's position with respect to the sun changed within a day due to the orbit of the earth around the sun.
On a counterrotating world the earth would only need to rotate by slightly under 360º in order to make the sun appear in the same spot in the sky again, because there the orbit of the earth around the sun actually helps.
In both cases the earth needs slightly under 24 hours for one 360º rotation (with respect to the distant stars). That period of time is called the "sidereal day", roughly meaning "star day": en.wiktionary.org/wiki/sidereal
en.wikipedia.org/wiki/Sidereal_time#Sidereal_day
The length of the solar day however depends on the direction of rotation of the earth around its axis (west to east or east to west) AND on the direction of the earth's orbit around the sun (counterclockwise or clockwise).
The solar day on our earth is longer than the sidereal day (time taken for 360º rotation with respect to the stars), because both directions are the same, the earth rotates west to east (also called counterclockwise) and its orbit around the sun is counterclockwise as well (working against it in a way).
The solar day on the counterrotating earth would however be shorter than the sidereal day, because the directions are different!
The counterrotating earth rotates east to west (or clockwise) but still orbits the sun counterclockwise (working together). Meaning that the time between consecutive sunrises is shorter than a sidereal day!
If my explanation is not good enough, simply draw a diagram of two planets with the same period, one rotating counterclockwise, one rotating clockwise around their own axis, both going around a star counterclockwise (in the same direction, at the same distance and orbital velocity). From such a diagram it's pretty easy to see that the second planet will always have exactly two more solar days than the first (within one orbit around the star, i.e. one sidereal year) no matter what period (length of sidereal day) you choose.
I think that's super cool!
Apparently time would then be reversed (just ask Superman!).
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Samoa would see Sun first and New Zealand last!
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