If Earth is tilted, why is Polaris always above the same spot?Why does this graph for sunlight intensity on...
Pulling the rope with one hand is as heavy as with two hands?
Do generators produce a fixed load?
Is GOCE a satellite or aircraft?
Why does nature favour the Laplacian?
Was there a Viking Exchange as well as a Columbian one?
If Earth is tilted, why is Polaris always above the same spot?
Lock in SQL Server and Oracle
Cannot populate data in lightning data table
Phrase for the opposite of "foolproof"
Pressure to defend the relevance of one's area of mathematics
Are Boeing 737-800’s grounded?
Can someone publish a story that happened to you?
gnu parallel how to use with ffmpeg
What does YCWCYODFTRFDTY mean?
Multiple options for Pseudonyms
Do I have an "anti-research" personality?
Find the coordinate of two line segments that are perpendicular
Is thermodynamics only applicable to systems in equilibrium?
Why was Germany not as successful as other Europeans in establishing overseas colonies?
TikZ how to make supply and demand arrows for nodes?
Transfer over $10k
How can Republicans who favour free markets, consistently express anger when they don't like the outcome of that choice?
Does a creature that is immune to a condition still make a saving throw?
How to back up a running remote server?
If Earth is tilted, why is Polaris always above the same spot?
Why does this graph for sunlight intensity on land has a steeper slope during sunrise as compared to sunset?Where exactly does the Moon flip, given that it appears the other way up in the other hemisphere?How can one explain the apparent motion of the Sun from a heliocentric point of view?Is the Earth Really Spinning? (honest question)Which constellation would appear to revolve around Denab,Vega or Thuban when axis of the earth would point toward them?Altitude of Midnight Satellite?Does Polaris have a trail in the sky timelapse?Why does earth's north pole roughly point in the same direction throughout the year?What is the highest angle the moon ever makes above the horizon at the North Pole?Did the Moon ever approximate a geosynchronous orbit above the early Earth?
$begingroup$
Why is Polaris, the North Star, always above (or near) the North Pole? If Earth is tilted, Polaris' path should be in winter 23 degrees away from its path in summer, or not?
observational-astronomy earth amateur-observing fundamental-astronomy
asked 7 hours ago
Guest55Guest55
133
New contributor
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
Why is Polaris, the North Star, always above (or near) the North Pole? If Earth is tilted, Polaris' path should be in winter 23 degrees away from its path in summer, or not?
observational-astronomy earth amateur-observing fundamental-astronomy
asked 7 hours ago
Guest55Guest55
133
New contributor
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
Why is Polaris, the North Star, always above (or near) the North Pole? If Earth is tilted, Polaris' path should be in winter 23 degrees away from its path in summer, or not?
observational-astronomy earth amateur-observing fundamental-astronomy
asked 7 hours ago
Guest55Guest55
133
New contributor
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
Why is Polaris, the North Star, always above (or near) the North Pole? If Earth is tilted, Polaris' path should be in winter 23 degrees away from its path in summer, or not?
observational-astronomy earth amateur-observing fundamental-astronomy
observational-astronomy earth amateur-observing fundamental-astronomy
asked 7 hours ago
Guest55Guest55
133
New contributor
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 7 hours ago
Guest55Guest55
133
New contributor
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 hours ago
Guest55
asked 7 hours ago
Guest55Guest55
133
New contributor
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 7 hours ago
Guest55Guest55
133
asked 7 hours ago
Guest55Guest55
133
133
New contributor
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Guest55 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
You are correct that the axis of the Earth's rotation is tilted with respect to the plane of its orbit by 23 degrees. But it is incorrect that the direction that the axis points changes by a large amount (it should be 2*23 degrees) over a 6 month time span.
Your assumption. If axis it pointed at Polaris at (1), then it should be pointed at a different star at (2).
The axis remains pointed in the same direction throughout the entire year because the laws of physics are that the axis of a spinning object remains pointed in the same direction unless a torque acts on the body to change its orientation. There are torques acting on the Earth (namely the Sun and Moon), but it takes 13000 years to change the direction from "one way to the opposite way", not 6 months.
Correct. The orientation of the Earth's spin axis remains pointed at the same star throughout the year (ignoring the slow, 26000 year precession cycle).
answered 6 hours ago
JohnHoltzJohnHoltz
3,0521612
$endgroup$
$begingroup$
Thank you so much! Now I understand why the stars are seen on the same paths.
$endgroup$
– Guest55
6 hours ago
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "514"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Guest55 is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fastronomy.stackexchange.com%2fquestions%2f31678%2fif-earth-is-tilted-why-is-polaris-always-above-the-same-spot%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
You are correct that the axis of the Earth's rotation is tilted with respect to the plane of its orbit by 23 degrees. But it is incorrect that the direction that the axis points changes by a large amount (it should be 2*23 degrees) over a 6 month time span.
Your assumption. If axis it pointed at Polaris at (1), then it should be pointed at a different star at (2).
The axis remains pointed in the same direction throughout the entire year because the laws of physics are that the axis of a spinning object remains pointed in the same direction unless a torque acts on the body to change its orientation. There are torques acting on the Earth (namely the Sun and Moon), but it takes 13000 years to change the direction from "one way to the opposite way", not 6 months.
Correct. The orientation of the Earth's spin axis remains pointed at the same star throughout the year (ignoring the slow, 26000 year precession cycle).
answered 6 hours ago
JohnHoltzJohnHoltz
3,0521612
$endgroup$
$begingroup$
Thank you so much! Now I understand why the stars are seen on the same paths.
$endgroup$
– Guest55
6 hours ago
add a comment |
$begingroup$
You are correct that the axis of the Earth's rotation is tilted with respect to the plane of its orbit by 23 degrees. But it is incorrect that the direction that the axis points changes by a large amount (it should be 2*23 degrees) over a 6 month time span.
Your assumption. If axis it pointed at Polaris at (1), then it should be pointed at a different star at (2).
The axis remains pointed in the same direction throughout the entire year because the laws of physics are that the axis of a spinning object remains pointed in the same direction unless a torque acts on the body to change its orientation. There are torques acting on the Earth (namely the Sun and Moon), but it takes 13000 years to change the direction from "one way to the opposite way", not 6 months.
Correct. The orientation of the Earth's spin axis remains pointed at the same star throughout the year (ignoring the slow, 26000 year precession cycle).
answered 6 hours ago
JohnHoltzJohnHoltz
3,0521612
$endgroup$
$begingroup$
Thank you so much! Now I understand why the stars are seen on the same paths.
$endgroup$
– Guest55
6 hours ago
add a comment |
$begingroup$
You are correct that the axis of the Earth's rotation is tilted with respect to the plane of its orbit by 23 degrees. But it is incorrect that the direction that the axis points changes by a large amount (it should be 2*23 degrees) over a 6 month time span.
Your assumption. If axis it pointed at Polaris at (1), then it should be pointed at a different star at (2).
The axis remains pointed in the same direction throughout the entire year because the laws of physics are that the axis of a spinning object remains pointed in the same direction unless a torque acts on the body to change its orientation. There are torques acting on the Earth (namely the Sun and Moon), but it takes 13000 years to change the direction from "one way to the opposite way", not 6 months.
Correct. The orientation of the Earth's spin axis remains pointed at the same star throughout the year (ignoring the slow, 26000 year precession cycle).
answered 6 hours ago
JohnHoltzJohnHoltz
3,0521612
$endgroup$
You are correct that the axis of the Earth's rotation is tilted with respect to the plane of its orbit by 23 degrees. But it is incorrect that the direction that the axis points changes by a large amount (it should be 2*23 degrees) over a 6 month time span.
Your assumption. If axis it pointed at Polaris at (1), then it should be pointed at a different star at (2).
The axis remains pointed in the same direction throughout the entire year because the laws of physics are that the axis of a spinning object remains pointed in the same direction unless a torque acts on the body to change its orientation. There are torques acting on the Earth (namely the Sun and Moon), but it takes 13000 years to change the direction from "one way to the opposite way", not 6 months.
Correct. The orientation of the Earth's spin axis remains pointed at the same star throughout the year (ignoring the slow, 26000 year precession cycle).
answered 6 hours ago
JohnHoltzJohnHoltz
3,0521612
answered 6 hours ago
JohnHoltzJohnHoltz
3,0521612
answered 6 hours ago
JohnHoltzJohnHoltz
3,0521612
answered 6 hours ago
JohnHoltzJohnHoltz
3,0521612
3,0521612
$begingroup$
Thank you so much! Now I understand why the stars are seen on the same paths.
$endgroup$
– Guest55
6 hours ago
add a comment |
$begingroup$
Thank you so much! Now I understand why the stars are seen on the same paths.
$endgroup$
– Guest55
6 hours ago
$begingroup$
Thank you so much! Now I understand why the stars are seen on the same paths.
$endgroup$
– Guest55
6 hours ago
$begingroup$
Thank you so much! Now I understand why the stars are seen on the same paths.
$endgroup$
– Guest55
6 hours ago
add a comment |
Guest55 is a new contributor. Be nice, and check out our Code of Conduct.
Guest55 is a new contributor. Be nice, and check out our Code of Conduct.
Guest55 is a new contributor. Be nice, and check out our Code of Conduct.
Guest55 is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Astronomy Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fastronomy.stackexchange.com%2fquestions%2f31678%2fif-earth-is-tilted-why-is-polaris-always-above-the-same-spot%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
