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Originally posted by imitator
I remember a thread about this a couple years ago on ATS.... it seems everything is getting recycled lately?
Originally posted by poet1b
reply to post by ZeroGhost
Great to have someone here who really knows this stuff. Thanks for posting.
How certain are we that our solar system orbits the milky way galactic core?
Wouldn't the time interval for a single cycle be millions of years?
It seems to me that this would only be a theory, and could be wrong.
with a period of 52 to 74 million years and an amplitude of ~49 to 93 pc out of the galactic plane.
I just don't think we have been observing outer-space with precision instruments long enough to measure a long enough arc to determine if we are moving in such a cyclic pattern. Half a cycle is 25 to 35 million years, and we have got maybe 50 years of solid precision measurements.
Originally posted by Devino
I ended up sifting through a few more pages until I gave up looking for an answer to this question. I would also like to ask this question, I mean your whole theory is relying on this to be true. I have also been following this theory and I don't particularly like Bad Astronomy's debunking attitude but I would like to know some facts on this subject if you have any.
Here are some questions to consider.
- Where was our solar systems point of origin into the Milky Way and departure form Sagittarius?
- What are the respective angles of said point of origin to our solar system and both galaxies?
- How long ago did we depart from Sagittarius?
- Do we have any old neighbors among us now?
Originally posted by GhostLancer
Do you have a link to that thread? It would be interesting to see how the information is similar, and also how it differs....
Study Shows the Milky Way is Out to Lunch
Chicken Little was right. The sky is falling.
Thousands of stars stripped from the nearby Sagittarius dwarf galaxy are streaming through our vicinity of the Milky Way galaxy, according to a new view of the local universe constructed by a team of astronomers from the University of Virginia and the University of Massachusetts.
The study, to be published in the Dec. 20 issue of the Astrophysical Journal, is the first to map the full extent of the Sagittarius galaxy and show in visually vivid detail how its debris wraps around and passes through our Milky Way. Sagittarius is 10,000 times smaller in mass than the Milky Way, so it is getting stretched out, torn apart and gobbled up by the bigger Milky Way.
"It's clear who's the bully in the interaction," said Steven Majewski, U.Va. professor of astronomy and lead author on the paper describing the results.
"Astronomers used to view galaxy formation as an event that happened in the distant past," noted David Spergel, a professor of astrophysics at Princeton University after viewing the new finding. "These observations reinforce the idea that galaxy formation is not an event, but an ongoing process."
On the other hand, Majewski and his colleagues have been surprised by the Earth's proximity to a portion of the Sagittarius debris. "For only a few percent of its 240 million-year orbit around the Milky Way galaxy does our Solar System pass through the path of Sagittarius debris," Majewski said. "Remarkably, stars from Sagittarius are now raining down onto our present position in the Milky Way. Stars from an alien galaxy are relatively near us. We have to re-think our assumptions about the Milky Way galaxy to account for this contamination."
This web page contains the original press release text from 2003(!) that has been corrupted/misinterpreted to "support" the incorrect conclusion that the Sun did not originate in the Milky Way galaxy. Read carefully and you will see this press release only details the characteristics of the Sagittarius galaxy and nothing more. All astrophysical evidence points confidently and indisputably to the fact the Sun is now and has always been a part of the Milky Way.
Originally posted by ZeroGhost
We are pretty sure we orbit the core.
Originally posted by zorgon
Originally posted by PuterMan
Why in Aliens & UFOs? This belongs in a scientific forum or in Fragile Earth. I think the mods should move it as it definitely does not belong in this forum.
Because it was late and I hit the wrong button