Question

What is the angle formed by the two planes, the one containing the orbit of
the earth around the sun, and the one containing the milky-way galaxy
spinning around itself? are they the same plane?

In message , Nipi
writes
What is the angle formed by the two planes, the one containing the orbit of
the earth around the sun, and the one containing the milky-way galaxy
spinning around itself? are they the same plane?


Homework question?

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Nipi wrote
Please only smart people reply

I'm suiting up for a wedding at the weekend. Shall I reply then?

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"Nipi" wrote in :

What is the angle formed by the two planes, the one containing the
orbit of the earth around the sun, and the one containing the
milky-way galaxy spinning around itself? are they the same plane?



Go outside and look after dark. Trace the arc passing through Jupiter and
Saturn (near enough to the plane of the Earth's orbit). Then note the angle
that the Milky Way crosses this arc. If you can't see the Milkyway due to
light polution, then do it the lazy way and use google.

Klazmon.

"Nipi" wrote in message
...
What is the angle formed by the two planes, the one containing the orbit
of
the earth around the sun, and the one containing the milky-way galaxy
spinning around itself? are they the same plane?



No, Nipi, the plane of Earth's solar orbit, a.k.a. the "ecliptic", is not
the same as the galactic plane.
The ecliptic is presently some 60 degrees off the galactic plane.
And this changes over time as your star system orbits the galaxy's center.
It's much like when you drop a record on the floor, and it wobbles round 'n
round, only slower.

Dr. Why?

Nipi wrote:

What is the angle formed by the two planes, the one containing the orbit of
the earth around the sun, and the one containing the milky-way galaxy
spinning around itself? are they the same plane?

Not at all; the angle between the ecliptic and the galactic equator
is just over sixty degrees. If you need a more precise figure, Google
for an online coordinate-conversion utility. I found this one:

http://realuniverse.nao.ac.jp/utility/coordconv-e.html

in about half a minute, but there are probably better ones available.

--
Odysseus