6 ms·
Don't know the answer to your questions but we are not at a fixed vantage point
by killingtime74 4y ago
Don't know the answer to your questions but we are not at a fixed vantage point
- vitiral 4y agoFixed relative to other galaxies...
- naikrovek 4y agowe move on Earth as the planet rotates, Earth moves within its orbit in the Solar system, our Solar system moves within its orbit in the galaxy, and our galaxy moves (we believe) within the universe, though I don't think we know how fast or what direction; generally, everything outside our local group is moving away, though.
- datavirtue 4y agoOur sun moves around the galaxy at about 500,000 mph...and thus so do we.
- acapybara 4y agoThe things aren't moving apart. Space itself is expanding.
- deleted 4y ago[deleted]
- naikrovek 4y agospace is expanding AND things are moving apart. where does red shift come from if things aren't moving apart?
- vitiral 4y agoYes, all this movement occurs and is infinitely small compared to the distance to other galaxies.
- 100721 4y agoIn a cosmological scale, we are goldfish in a bowl (Earth). We can move around inside our bowl, but we cannot move the bowl itself, and if we leave the bowl we won't last very long. Thus, our vantage point is fixed.
- mxkopy 4y agoThe bowl (and the table, for that matter) move enough for useful measurements to be made wrt things inside the milky way. https://en.wikipedia.org/wiki/Parallax_in_astronomy https://en.wikipedia.org/wiki/Parallax_in_astronomy
- kzrdude 4y agoI learned now at least that our parallax measurements have been improved but they are still limited to tens of thousands of light years, i.e not reaching out of the galaxy, see https://en.wikipedia.org/wiki/Stellar_parallax#Space_astrometry https://en.wikipedia.org/wiki/Stellar_parallax#Space_astrome...