We also get to see the light radiate the stellar gas clouds around them at the speed of light where we see supernova in these clouds - sometimes thousands of light years across themselves...
Direct observation is not the only method of observation and measurement. We have numerous examples of observations today that show that the constants we observe now were the same in the past. Two examples I can think of are the Oklo natural nuclear reactor in Gabon and Supernova 1987A.
The Workings of an Ancient Nuclear Reactor
SN1987A and the Age of the Universe
Oh!

Case in point! Thank you
@USincognito!
There are many suppositions required in the first for the theory to work. Any supposition might be changed, and then other options might occur.
Unless time is also bent.
Given everything we've learnt, and now know about the universe, the various independent lines of investigation that all correlate to the same results and the complete lack of any conflicting evidence, we have to tentatively accept them at their face value then. They give us accurate modelling and precise results when predicting future events, and we've benefited immensely because of it to even consider discarding these working models just in case some preferred future piece of evidence that support one's preconceived world view...
For example, gravitational lensing allows us to rewatch a supernovae where the occurrence happens in a galaxy that from our point of view, is or nearly behind another galaxy. The difference between the various supernovae's lensing light to reach us can vary anywhere from a few minutes to, in this case, more than 50 years!
http://news.berkeley.edu/2015/03/05...itational-lens/?con&dom=pscau&src=syndication
This absolutely contradicts a YEC universe for light to be delayed by 50 years or more, but I'd be very interested to see your calculations on how bent light would have to be in order for it to be delayed in reaching us by 50 years or more in a 6,000 to 10,000 year old universe? As you'd say when handing out your Math test, "Show us your workings" so we can check it out.
The ancients were just as sure the sun went around the earth.
and of course, they lacked much of the scientific evidence, measurements and observations, along with the precision instrumental technology we have today.
I've already addressed radiohalos.
Hmmm, I missed it. Could you repeat for me please, or point me to the post where you expained it? I'm very interested in your explanation...
Not too fake then, is it?
if Adam were actual, Agreed. So not fake in fact, as to be real?