The night sky 7,000,000 years ago above Earth?

Yes, a light year is a measure of distance yet that distance means that
it took one year to travel 6 trillion miles just like it takes one
minute to travel one mile at 60 MPH (88ft/sec) so it can be used for
time as well.

I could have somewhat misunderstood this question. Although it is true
that precession doesn't change the apparent distance between anything
other than planets (4 min/day) precession did put Vega over the North
Pole when the Pyramids were built but now it's Polaris so in that
perspective the constellations could have looked different from a
latitude perspective.

"Douglas Iverson" wrote in message
...
I could have somewhat misunderstood this question. Although it is true
that precession doesn't change the apparent distance between anything
other than planets (4 min/day) precession did put Vega over the North
Pole when the Pyramids were built but now it's Polaris so in that
perspective the constellations could have looked different from a
latitude perspective.

Actually, the closest (bright) star to the pole during the building of the
Pyramids was Thuban. The pole won't be near Vega for another 11,000 years

(Douglas Iverson) wrote in alt.astronomy:

I could have somewhat misunderstood this question. Although it is true
that precession doesn't change the apparent distance between anything
other than planets (4 min/day) precession did put Vega over the North
Pole when the Pyramids were built

During that time Thuban, in the constellation of Draco was closest to the
celestial North pole.

but now it's Polaris so in that
perspective the constellations could have looked different from a
latitude perspective.

I understand.



--
CeeBee


"I am not a crook"

I guessed on the actual star but the point is still the same. Coulda
swore it was Vega.

Douglas Iverson wrote:

The Big Bang happened everywhere at once since there was no universe or
space/time in existance. Stars move at different individual speeds
outside of the speed of the fabric of space/time and closer stars will
appear to move faster. so the Big Dipper did not look like a dipper in
the past and won't in the future especially when it's stars go
supernova.

I don't think any of the Big Dipper stars are supernova candidates;
the intrinsically brightest one is Eta UMa, a B star with an absolute
magnitude of about -2, and I don't think even that one's big enough
to become a supernova. Some of the others are close binaries and
might therefore have the potential to develop into novas.

--
Odysseus

"Greg Neill" wrote in
:

"Whisper" wrote in message
...

"Douglas Iverson" wrote in message
...
The Big Bang happened everywhere at once since there was no
universe or space/time in existance.

Wasn't there? That's crap methinks........

I bet if you go back 100 trillion light yrs there woulda been a
universe in existence..........

Light years are not a measure of time. They're a measure of
distance.

If the current model is anything near correct, both space
*and* time were created in the Big Bang. You couldn't
go back 100 trillion years.



Furthermore. Consider this.

As the light from a distant galaxy reaches us, the galaxy had increased its
distance (due to expansion). So, *now* it is really much further than the
distance we see it as *then*

For example. For an object at we measure at 12 billion light years with a
redshift of 7 (*then*), the distance *now* is 23.3 billion light years.

Qbasic code to do this calc from S&T. Download file LOOKBACK.BAS
http://skyandtelescope.com/resources...icle_326_2.asp
Article S&T September 1997 p59

Martin Lewicki