0
When you see a galaxy 8 billion light-years away you are looking how many years into the past?
When you see a galaxy that is 8 billion light years away, the light that's dribbling into your eye
left that galaxy 8 billion years ago, and has been traveling toward you ever since then.
If you just happen to see the galaxy explode or turn blue while you're watching it, you'll know
that it actually exploded or turned blue 8 billion years ago.
Similarly, if the galaxy explodes or turns green tonight, you won't know about that for another
8 billion years from tonight.
What else can I help you with?
When you see a galaxy 8 billion light years away you are how many years into the past?
8 billion light years means that the light has taken 8 billion years to reach you. That's how far into the past you are seeing.
How far is center of milky way to earth in light years?
The milky way galaxy is roughly a disc shape the is around 1000 lightyears thick on average and 100,000 lightyears in diameter. Our solar system sits roughly 26,500 light years from the centre.
What is the farthest galaxy ever observed by Hubble?
The farthest galaxy ever observed by the Hubble Space Telescope is GN-z11, located about 13.4 billion light-years away. This means we are seeing the galaxy as it was just 400 million years after the Big Bang.
What will happen to the Milky Way and Andromeda galaxies 4 billion years from now?
Four billion years from now, our galaxy, the Milky Way, will collide with our large spiraled neighbor, Andromeda.
What is the nearest galexy?
The nearest major galaxy is Andromeda which is only 2.5 million light years away. There are two dwarf galaxies near the Milky Way called the Large Magellanic Cloud and the Small Magellanic Cloud roughly 75,000 light years away.In about 2.5 billion years, Andromeda and the Milky Way will merge.
How many lightyears are in a gly?
1,000,000,000 light-years (one billion light-years) are in one Gly
An extraterrestrial being in galaxy B discovered galaxy A was 8 billion light years away If galaxy B is approximately 13.5 billion years old when did galaxy A emit the light that ET observes?
8 billion years ago.
When you observe a distant galaxy whose photons have traveled for 10 billion years before reaching Earth you are seeing that galaxy as it was when the universe was?
Yes. If the photons have travelled 10 billion years, that means you are seeing the galaxy as it was 10 billion years ago.
How far is Alkaid from Mizar?
Alkaid is approximately 24.8 light years away from Mizar.
How do astronomers observing distant galaxies talk about looking backward in time?
The speed of light is not infinite. Light takes time to travel from distant galaxies to our eyes here on Earth. If a galaxy is 1 billion light years away, it has taken 1 billion years for the light emitted by said galaxy to reach us here, so (obviously) we are seeing the light emitted 1 billion years ago. In a sense, we are seeing 1 billion years into the past at the light emitted by that galaxy.
How old is your galaxy?
about 14 billion years old
What is the age of the sombrero galaxy?
sombrero galaxy is 10 to 13 billion years old
When will the galaxy reform?
In about 2.5 billion years when the Andromeda Galaxy merges with the Milky Way
How long does it take for a galaxy to form?
It takes about 13.99 billion years for a galaxy to form.
How long does it take for galaxy take to form?
It takes about 13.99 billion years for a galaxy to form.
What galaxy is the Milky going to crash into in some odd billion years from now?
Andromeda galaxy
When will the Andromeda galaxy meet ours?
In 2.5 billion years.
