http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemParallaxhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemParallaxhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemParallaxhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemOrion, the Hunterhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemOrion, the Hunterhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemThe stars in a constellation can be
at very different distances from Earth.http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemThe stars in a constellation can be
at very different distances from Earth.Let's travel to a star in Orion's Belt
to see what we mean.Alnitakhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemThis is Alnitak. http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemLet's zoom out a bit, to remind ourselves what
Orion looks like from our part of the galaxy. http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemLet's zoom out a bit, to remind ourselves what
Orion looks like from our part of the galaxy. http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemThe Big Dipperhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemThe Big Dipper82d5e174-8cb4-4e7b-aecf-41173ff9f979http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystembucket82d5e174-8cb4-4e7b-aecf-41173ff9f979http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystembuckethandle82d5e174-8cb4-4e7b-aecf-41173ff9f979http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem82d5e174-8cb4-4e7b-aecf-41173ff9f979http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemTo get a better feel for parallax, we will
center our camera on a star 560 pc
BEHIND the Big Dipper.82d5e174-8cb4-4e7b-aecf-41173ff9f9796dac36ea-818b-49b6-a353-4dcb9a725ea3http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemTo get a better feel for parallax, we will
center our camera on a star 560 pc
BEHIND the Big Dipper.82d5e174-8cb4-4e7b-aecf-41173ff9f9796dac36ea-818b-49b6-a353-4dcb9a725ea3http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem82d5e174-8cb4-4e7b-aecf-41173ff9f9796dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d9http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem82d5e174-8cb4-4e7b-aecf-41173ff9f9796dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d9http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemLet's zoom back from that star
far enough to see the Big Dipper
again. 82d5e174-8cb4-4e7b-aecf-41173ff9f9796dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d9http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemWe'll focus on only one Big Dipper star.We'll call this BD star A.2c07662f-fd32-48d8-9ecd-5b6c3347b3e36dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d92c07662f-fd32-48d8-9ecd-5b6c3347b3e35c4f565b-a2cf-4a57-86f1-d0353595676d6dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d92c07662f-fd32-48d8-9ecd-5b6c3347b3e35c4f565b-a2cf-4a57-86f1-d0353595676d"Apparent Shift" in location of
BD Star A because of the
change in viewing location.6dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d92c07662f-fd32-48d8-9ecd-5b6c3347b3e35c4f565b-a2cf-4a57-86f1-d0353595676d6dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d92c07662f-fd32-48d8-9ecd-5b6c3347b3e35c4f565b-a2cf-4a57-86f1-d0353595676dhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemViewpoint 2
(parsecs from
our Solar System)Big Dipper Star AViewpoint 1
(Our Solar System)Distant Background StarThe size of this angle tells
you how far away the blue
star is.Parallax:
The apparent change in position of a
relatively nearby object due to a change
in the observer's position.6dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d92c07662f-fd32-48d8-9ecd-5b6c3347b3e35c4f565b-a2cf-4a57-86f1-d0353595676dhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemViewpoint 2
(parsecs from
our Solar System)Big Dipper Star AViewpoint 1
(Our Solar System)Distant Background StarThe size of this angle tells
you how far away the blue
star is.6dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d92c07662f-fd32-48d8-9ecd-5b6c3347b3e35c4f565b-a2cf-4a57-86f1-d0353595676dhttp://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem6dac36ea-818b-49b6-a353-4dcb9a725ea328b5a0fa-d2d6-419b-aa4e-ede7aee562d8http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem10.5 degreesNow we'll look at a new star.
We'll call this Big Dipper Star B.6dac36ea-818b-49b6-a353-4dcb9a725ea328b5a0fa-d2d6-419b-aa4e-ede7aee562d8http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemNow we'll look at a new star.
We'll call this Big Dipper Star B.BD Star B6dac36ea-818b-49b6-a353-4dcb9a725ea328b5a0fa-d2d6-419b-aa4e-ede7aee562d8http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem10.5 degreesNow we'll shift to Viewpoint 2.6dac36ea-818b-49b6-a353-4dcb9a725ea328b5a0fa-d2d6-419b-aa4e-ede7aee562d8http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem82d5e174-8cb4-4e7b-aecf-41173ff9f9796dac36ea-818b-49b6-a353-4dcb9a725ea3a0400854-389f-4c61-8ab3-b89c25dfc8d9http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemThe yellow dot is the location of the Sun.What happens if we look at the big dipper from a different perspective...?82d5e174-8cb4-4e7b-aecf-41173ff9f979a0400854-389f-4c61-8ab3-b89c25dfc8d91d4a33d4-7099-46e8-8ea9-1ea02517898d6b11b3a5-3529-4bb5-8d48-c194754be957http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystemThe yellow dot is the location of the Sun.82d5e174-8cb4-4e7b-aecf-41173ff9f979a0400854-389f-4c61-8ab3-b89c25dfc8d91d4a33d4-7099-46e8-8ea9-1ea02517898d6b11b3a5-3529-4bb5-8d48-c194754be957http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem82d5e174-8cb4-4e7b-aecf-41173ff9f979a0400854-389f-4c61-8ab3-b89c25dfc8d91d4a33d4-7099-46e8-8ea9-1ea02517898d6b11b3a5-3529-4bb5-8d48-c194754be957http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem~25 pcSome of the stars are nearly the same distance. from the Sun.82d5e174-8cb4-4e7b-aecf-41173ff9f979a0400854-389f-4c61-8ab3-b89c25dfc8d91d4a33d4-7099-46e8-8ea9-1ea02517898d6b11b3a5-3529-4bb5-8d48-c194754be957http://www.worldwidetelescope.org/wwtweb/thumbnail.aspx?name=SolarSystem~37 pc82d5e174-8cb4-4e7b-aecf-41173ff9f979a0400854-389f-4c61-8ab3-b89c25dfc8d91d4a33d4-7099-46e8-8ea9-1ea02517898d6b11b3a5-3529-4bb5-8d48-c194754be957PNG
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