2006-12-17 21:35:17 · 19 answers · asked by Ishfaq A 3 in Science & Mathematics ➔ Physics
Use your imagination and make your own up.
The largest standard unit of distance is the parallax second or "parsec". It is the distance an object has to be away from the sun for it to appear to move by 2 seconds of an arc when viewed from either side of the Earth's orbit. It is approximately 3.3 light years.
Ta.
2006-12-18 07:43:41 · answer #1 · answered by chopchubes 4 · 1⤊ 0⤋
a Light Year is the accepted, for now. In spacial elements many are thinking in a less 'square-box' concept. A Universal Unit is a vast unit. Rather than a Light Year wich is Time occured x Speed of Light , or Pointg a to Point B, thats so ancient.
A Universal Unit is still an unknown, but think of the Universe, then double it, then double that, how much distance is there now. thats 9 Universes, we are includeing the original one in that.
See when I doubled the Universe I made 2 new Universes, that =3, doubled that, 1 universe, doubled =3, 3 Universes Doubled , 9.
As we are really uncertain as to how immense or how tiny a Universe is, most use the Light Year as the Gauge, for now thats the only concept that our minds can grasp.
2006-12-17 21:55:51 · answer #2 · answered by Yawn Gnome 7 · 0⤊ 0⤋
A parsec which is about 3.2 light years. In conversation about large scale cosmology you sometimes hear the term megaparsecs which is obviously 3.2 million light years, though I'm not sure the use of a prefix counts as making it a different unit. I believe parsec (short for parallax second) is the answer you're looking for.
2006-12-17 22:25:47 · answer #3 · answered by Anonymous · 1⤊ 0⤋
because an astronomical unit is about one hundred and fifty million kilometers. at the same time as issues are extremely a procedures away or extremely large, that is less difficult to apply values like 3 AU or 5,three hundred AU extremely of 450,000,000 km or 795,000,000,000 km, respectively. Its the same reason that you'll degree the gap from one city to the subsequent in miles, not millimeters.
2016-11-30 22:06:19 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Hi Guys
I'm an astrophysist by trade and the biggest unit in use is the megaparsec NOT the light year .
Hope this helps
2006-12-18 10:12:55 · answer #5 · answered by Mark G 7 · 0⤊ 0⤋
1 light-year is equal to roughly 1/3 of a parsec
1 parsec = 1pc= about 3 x 10^16m
2006-12-17 22:13:58 · answer #6 · answered by town_cl0wn 4 · 0⤊ 0⤋
As far as I know a parsec is more than a light year
and may be the biggest astronomical unit.
2006-12-17 21:38:38 · answer #7 · answered by farshadowman 3 · 0⤊ 0⤋
A light year, I think
that is the distance it takes for light to travel in one year
I can't remember exactly how big it is
But some interesting facts:
It takes 8 minutes for the sun's light to reach the earth - when you look at the sun you look at light that set off from the sun 8 minutes ago.
Scientists found a galaxy millions of light years away, so the light they see set off from the galaxy millions of years ago.
2006-12-18 03:23:26 · answer #8 · answered by **rainbow** 2 · 0⤊ 1⤋
Light Year
2006-12-17 21:36:08 · answer #9 · answered by thelastryan 3 · 0⤊ 1⤋
I think it may be a light year
A light-year is a unit of distance. It is the distance that light can travel in one year.... More precisely, one light-year is equal to 9,500,000,000,000 kilometers. ...
2006-12-17 21:40:18 · answer #10 · answered by Daddybear 7 · 0⤊ 0⤋