Puzzling quotes from astronauts about earth size

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
1
down vote

favorite












I have no doubt that we have been to the moon. This question has nothing to do with a moon landing hoax. But, there are two quotes from two different astronauts regarding the size of the earth as viewed from the moon that are puzzling to me. Both quotes talk about how small the Earth looked. Shouldn’t the Earth look very large when viewed from the moon




It suddenly struck me that that tiny pea, pretty and blue was the Earth. I put up my thumb, shut one eye and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small. — Neil Armstong



As we got further and further away it [the Earth] diminished in size. Finally it shrank to the size of a marble, the most beautiful you can imagine. That beautiful, warm living object looked so fragile, so delicate that if you touched it with a finger it would crumble and fall apart. Seeing this has to change a man. — James Irwin




I know the term large is subjective, but still, the comments seem off. Please let me know what I’m missing.










share|improve this question























  • The moon is very far from Earth so it would seem that small from the Moon.
    – MystaryPi
    13 hours ago














up vote
1
down vote

favorite












I have no doubt that we have been to the moon. This question has nothing to do with a moon landing hoax. But, there are two quotes from two different astronauts regarding the size of the earth as viewed from the moon that are puzzling to me. Both quotes talk about how small the Earth looked. Shouldn’t the Earth look very large when viewed from the moon




It suddenly struck me that that tiny pea, pretty and blue was the Earth. I put up my thumb, shut one eye and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small. — Neil Armstong



As we got further and further away it [the Earth] diminished in size. Finally it shrank to the size of a marble, the most beautiful you can imagine. That beautiful, warm living object looked so fragile, so delicate that if you touched it with a finger it would crumble and fall apart. Seeing this has to change a man. — James Irwin




I know the term large is subjective, but still, the comments seem off. Please let me know what I’m missing.










share|improve this question























  • The moon is very far from Earth so it would seem that small from the Moon.
    – MystaryPi
    13 hours ago












up vote
1
down vote

favorite









up vote
1
down vote

favorite











I have no doubt that we have been to the moon. This question has nothing to do with a moon landing hoax. But, there are two quotes from two different astronauts regarding the size of the earth as viewed from the moon that are puzzling to me. Both quotes talk about how small the Earth looked. Shouldn’t the Earth look very large when viewed from the moon




It suddenly struck me that that tiny pea, pretty and blue was the Earth. I put up my thumb, shut one eye and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small. — Neil Armstong



As we got further and further away it [the Earth] diminished in size. Finally it shrank to the size of a marble, the most beautiful you can imagine. That beautiful, warm living object looked so fragile, so delicate that if you touched it with a finger it would crumble and fall apart. Seeing this has to change a man. — James Irwin




I know the term large is subjective, but still, the comments seem off. Please let me know what I’m missing.










share|improve this question















I have no doubt that we have been to the moon. This question has nothing to do with a moon landing hoax. But, there are two quotes from two different astronauts regarding the size of the earth as viewed from the moon that are puzzling to me. Both quotes talk about how small the Earth looked. Shouldn’t the Earth look very large when viewed from the moon




It suddenly struck me that that tiny pea, pretty and blue was the Earth. I put up my thumb, shut one eye and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small. — Neil Armstong



As we got further and further away it [the Earth] diminished in size. Finally it shrank to the size of a marble, the most beautiful you can imagine. That beautiful, warm living object looked so fragile, so delicate that if you touched it with a finger it would crumble and fall apart. Seeing this has to change a man. — James Irwin




I know the term large is subjective, but still, the comments seem off. Please let me know what I’m missing.







the-moon observational-astronomy moonlanding






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 58 mins ago









Jan Doggen

1,23511125




1,23511125










asked 14 hours ago









Lambda

19315




19315











  • The moon is very far from Earth so it would seem that small from the Moon.
    – MystaryPi
    13 hours ago
















  • The moon is very far from Earth so it would seem that small from the Moon.
    – MystaryPi
    13 hours ago















The moon is very far from Earth so it would seem that small from the Moon.
– MystaryPi
13 hours ago




The moon is very far from Earth so it would seem that small from the Moon.
– MystaryPi
13 hours ago










5 Answers
5






active

oldest

votes

















up vote
3
down vote













From the moon, the earth would appear to span across about 2 degree of sky. If you hold your thumb a few inches in front of your face (or your facemask if you are on the moon), your thumb will block about two degrees of your field of view (Armstrong mentions closing one eye because his thumb is close enough that the different perspective between his two eyes is significant). So there doesn't seem to be anything too surprising about these statements.






share|improve this answer



























    up vote
    3
    down vote













    You can get a rough idea of how large the Earth appears from these two photos:
    enter image description here



    enter image description here



    It's not quite that large, is it?






    share|improve this answer
















    • 1




      It looks surprisingly small! Great photos. Thank you.
      – Lambda
      1 hour ago

















    up vote
    2
    down vote













    The Earth is 4 times the diameter of the Moon. The Earth viewed from the Moon will therefore appear 4 times as large as the Moon viewed from the Earth.



    The Moon is easily obscured by a thumb at arm's length.



    Now bring your thumb closer (because you can't fully extend your arm in a bulky space suit) and put on the biggest pair of ski gloves you can find.



    It is not a great stretch of the imagination to think your thumb would obscure something 4 times the size of the Moon.






    share|improve this answer



























      up vote
      1
      down vote













      If you reduce the scale of the Earth to make it the size of a tennis ball, then the moon would be about the size of a ping-pong ball, and the moon would be about 7 feet from the Earth.



      So you can get a good idea of what the moon would look like from the Earth: Get a tennis ball and ping-pong ball set them up 7 ft (2 m) apart put your head next to the ping-pong ball, and the tennis ball will look about the same size as the Earth would look on the moon



      https://www.youtube.com/watch?v=GCTuirkcRwo



      Now hold up your thumb, cover the tennis ball and imagine "on it [is] everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives".






      share|improve this answer




















      • Informative video. Thanks
        – Lambda
        1 hour ago

















      up vote
      -2
      down vote













      Watching the moon from earth, it seems to be larger at the horizon than at the sky. This means that optical illusions may play a role here, too. The lack of reference objects or maybe the different shape of the horizon on moon may also contribute to the apparent size of earth.






      share|improve this answer








      New contributor




      Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.

















        Your Answer




        StackExchange.ifUsing("editor", function ()
        return StackExchange.using("mathjaxEditing", function ()
        StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
        StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
        );
        );
        , "mathjax-editing");

        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',
        convertImagesToLinks: false,
        noModals: false,
        showLowRepImageUploadWarning: true,
        reputationToPostImages: null,
        bindNavPrevention: true,
        postfix: "",
        noCode: true, onDemand: true,
        discardSelector: ".discard-answer"
        ,immediatelyShowMarkdownHelp:true
        );



        );













         

        draft saved


        draft discarded


















        StackExchange.ready(
        function ()
        StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fastronomy.stackexchange.com%2fquestions%2f28181%2fpuzzling-quotes-from-astronauts-about-earth-size%23new-answer', 'question_page');

        );

        Post as a guest






























        5 Answers
        5






        active

        oldest

        votes








        5 Answers
        5






        active

        oldest

        votes









        active

        oldest

        votes






        active

        oldest

        votes








        up vote
        3
        down vote













        From the moon, the earth would appear to span across about 2 degree of sky. If you hold your thumb a few inches in front of your face (or your facemask if you are on the moon), your thumb will block about two degrees of your field of view (Armstrong mentions closing one eye because his thumb is close enough that the different perspective between his two eyes is significant). So there doesn't seem to be anything too surprising about these statements.






        share|improve this answer
























          up vote
          3
          down vote













          From the moon, the earth would appear to span across about 2 degree of sky. If you hold your thumb a few inches in front of your face (or your facemask if you are on the moon), your thumb will block about two degrees of your field of view (Armstrong mentions closing one eye because his thumb is close enough that the different perspective between his two eyes is significant). So there doesn't seem to be anything too surprising about these statements.






          share|improve this answer






















            up vote
            3
            down vote










            up vote
            3
            down vote









            From the moon, the earth would appear to span across about 2 degree of sky. If you hold your thumb a few inches in front of your face (or your facemask if you are on the moon), your thumb will block about two degrees of your field of view (Armstrong mentions closing one eye because his thumb is close enough that the different perspective between his two eyes is significant). So there doesn't seem to be anything too surprising about these statements.






            share|improve this answer












            From the moon, the earth would appear to span across about 2 degree of sky. If you hold your thumb a few inches in front of your face (or your facemask if you are on the moon), your thumb will block about two degrees of your field of view (Armstrong mentions closing one eye because his thumb is close enough that the different perspective between his two eyes is significant). So there doesn't seem to be anything too surprising about these statements.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 13 hours ago









            antlersoft

            87838




            87838




















                up vote
                3
                down vote













                You can get a rough idea of how large the Earth appears from these two photos:
                enter image description here



                enter image description here



                It's not quite that large, is it?






                share|improve this answer
















                • 1




                  It looks surprisingly small! Great photos. Thank you.
                  – Lambda
                  1 hour ago














                up vote
                3
                down vote













                You can get a rough idea of how large the Earth appears from these two photos:
                enter image description here



                enter image description here



                It's not quite that large, is it?






                share|improve this answer
















                • 1




                  It looks surprisingly small! Great photos. Thank you.
                  – Lambda
                  1 hour ago












                up vote
                3
                down vote










                up vote
                3
                down vote









                You can get a rough idea of how large the Earth appears from these two photos:
                enter image description here



                enter image description here



                It's not quite that large, is it?






                share|improve this answer












                You can get a rough idea of how large the Earth appears from these two photos:
                enter image description here



                enter image description here



                It's not quite that large, is it?







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 4 hours ago









                stackzebra

                1685




                1685







                • 1




                  It looks surprisingly small! Great photos. Thank you.
                  – Lambda
                  1 hour ago












                • 1




                  It looks surprisingly small! Great photos. Thank you.
                  – Lambda
                  1 hour ago







                1




                1




                It looks surprisingly small! Great photos. Thank you.
                – Lambda
                1 hour ago




                It looks surprisingly small! Great photos. Thank you.
                – Lambda
                1 hour ago










                up vote
                2
                down vote













                The Earth is 4 times the diameter of the Moon. The Earth viewed from the Moon will therefore appear 4 times as large as the Moon viewed from the Earth.



                The Moon is easily obscured by a thumb at arm's length.



                Now bring your thumb closer (because you can't fully extend your arm in a bulky space suit) and put on the biggest pair of ski gloves you can find.



                It is not a great stretch of the imagination to think your thumb would obscure something 4 times the size of the Moon.






                share|improve this answer
























                  up vote
                  2
                  down vote













                  The Earth is 4 times the diameter of the Moon. The Earth viewed from the Moon will therefore appear 4 times as large as the Moon viewed from the Earth.



                  The Moon is easily obscured by a thumb at arm's length.



                  Now bring your thumb closer (because you can't fully extend your arm in a bulky space suit) and put on the biggest pair of ski gloves you can find.



                  It is not a great stretch of the imagination to think your thumb would obscure something 4 times the size of the Moon.






                  share|improve this answer






















                    up vote
                    2
                    down vote










                    up vote
                    2
                    down vote









                    The Earth is 4 times the diameter of the Moon. The Earth viewed from the Moon will therefore appear 4 times as large as the Moon viewed from the Earth.



                    The Moon is easily obscured by a thumb at arm's length.



                    Now bring your thumb closer (because you can't fully extend your arm in a bulky space suit) and put on the biggest pair of ski gloves you can find.



                    It is not a great stretch of the imagination to think your thumb would obscure something 4 times the size of the Moon.






                    share|improve this answer












                    The Earth is 4 times the diameter of the Moon. The Earth viewed from the Moon will therefore appear 4 times as large as the Moon viewed from the Earth.



                    The Moon is easily obscured by a thumb at arm's length.



                    Now bring your thumb closer (because you can't fully extend your arm in a bulky space suit) and put on the biggest pair of ski gloves you can find.



                    It is not a great stretch of the imagination to think your thumb would obscure something 4 times the size of the Moon.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 7 hours ago









                    Rob Jeffries

                    48.6k495147




                    48.6k495147




















                        up vote
                        1
                        down vote













                        If you reduce the scale of the Earth to make it the size of a tennis ball, then the moon would be about the size of a ping-pong ball, and the moon would be about 7 feet from the Earth.



                        So you can get a good idea of what the moon would look like from the Earth: Get a tennis ball and ping-pong ball set them up 7 ft (2 m) apart put your head next to the ping-pong ball, and the tennis ball will look about the same size as the Earth would look on the moon



                        https://www.youtube.com/watch?v=GCTuirkcRwo



                        Now hold up your thumb, cover the tennis ball and imagine "on it [is] everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives".






                        share|improve this answer




















                        • Informative video. Thanks
                          – Lambda
                          1 hour ago














                        up vote
                        1
                        down vote













                        If you reduce the scale of the Earth to make it the size of a tennis ball, then the moon would be about the size of a ping-pong ball, and the moon would be about 7 feet from the Earth.



                        So you can get a good idea of what the moon would look like from the Earth: Get a tennis ball and ping-pong ball set them up 7 ft (2 m) apart put your head next to the ping-pong ball, and the tennis ball will look about the same size as the Earth would look on the moon



                        https://www.youtube.com/watch?v=GCTuirkcRwo



                        Now hold up your thumb, cover the tennis ball and imagine "on it [is] everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives".






                        share|improve this answer




















                        • Informative video. Thanks
                          – Lambda
                          1 hour ago












                        up vote
                        1
                        down vote










                        up vote
                        1
                        down vote









                        If you reduce the scale of the Earth to make it the size of a tennis ball, then the moon would be about the size of a ping-pong ball, and the moon would be about 7 feet from the Earth.



                        So you can get a good idea of what the moon would look like from the Earth: Get a tennis ball and ping-pong ball set them up 7 ft (2 m) apart put your head next to the ping-pong ball, and the tennis ball will look about the same size as the Earth would look on the moon



                        https://www.youtube.com/watch?v=GCTuirkcRwo



                        Now hold up your thumb, cover the tennis ball and imagine "on it [is] everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives".






                        share|improve this answer












                        If you reduce the scale of the Earth to make it the size of a tennis ball, then the moon would be about the size of a ping-pong ball, and the moon would be about 7 feet from the Earth.



                        So you can get a good idea of what the moon would look like from the Earth: Get a tennis ball and ping-pong ball set them up 7 ft (2 m) apart put your head next to the ping-pong ball, and the tennis ball will look about the same size as the Earth would look on the moon



                        https://www.youtube.com/watch?v=GCTuirkcRwo



                        Now hold up your thumb, cover the tennis ball and imagine "on it [is] everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives".







                        share|improve this answer












                        share|improve this answer



                        share|improve this answer










                        answered 7 hours ago









                        James K

                        30.8k246103




                        30.8k246103











                        • Informative video. Thanks
                          – Lambda
                          1 hour ago
















                        • Informative video. Thanks
                          – Lambda
                          1 hour ago















                        Informative video. Thanks
                        – Lambda
                        1 hour ago




                        Informative video. Thanks
                        – Lambda
                        1 hour ago










                        up vote
                        -2
                        down vote













                        Watching the moon from earth, it seems to be larger at the horizon than at the sky. This means that optical illusions may play a role here, too. The lack of reference objects or maybe the different shape of the horizon on moon may also contribute to the apparent size of earth.






                        share|improve this answer








                        New contributor




                        Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                        Check out our Code of Conduct.





















                          up vote
                          -2
                          down vote













                          Watching the moon from earth, it seems to be larger at the horizon than at the sky. This means that optical illusions may play a role here, too. The lack of reference objects or maybe the different shape of the horizon on moon may also contribute to the apparent size of earth.






                          share|improve this answer








                          New contributor




                          Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.



















                            up vote
                            -2
                            down vote










                            up vote
                            -2
                            down vote









                            Watching the moon from earth, it seems to be larger at the horizon than at the sky. This means that optical illusions may play a role here, too. The lack of reference objects or maybe the different shape of the horizon on moon may also contribute to the apparent size of earth.






                            share|improve this answer








                            New contributor




                            Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.









                            Watching the moon from earth, it seems to be larger at the horizon than at the sky. This means that optical illusions may play a role here, too. The lack of reference objects or maybe the different shape of the horizon on moon may also contribute to the apparent size of earth.







                            share|improve this answer








                            New contributor




                            Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.









                            share|improve this answer



                            share|improve this answer






                            New contributor




                            Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.









                            answered 1 hour ago









                            Hartmut Braun

                            1




                            1




                            New contributor




                            Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.





                            New contributor





                            Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.






                            Hartmut Braun is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.



























                                 

                                draft saved


                                draft discarded















































                                 


                                draft saved


                                draft discarded














                                StackExchange.ready(
                                function ()
                                StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fastronomy.stackexchange.com%2fquestions%2f28181%2fpuzzling-quotes-from-astronauts-about-earth-size%23new-answer', 'question_page');

                                );

                                Post as a guest













































































                                Comments

                                Popular posts from this blog

                                What does second last employer means? [closed]

                                List of Gilmore Girls characters

                                Confectionery