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What else can I help you with?
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.
How many years ago did the world explode?
The Earth did not explode but it had a fairly heavy collision with a planet called Theia about 4.6 billion years ago.
According to the big bang theory how did the universe begin-?
The latest estimate is 13.7 billion years ago.
The sun can continue to exist in its present stable state for about another .?
5.5 billion years
What was the year 13 billion years ago?
Who knows. It's a bit like asking how old someone is who lives in New Mexico. If we can see it and it's 13 billion light years away, then the only thing we know for sure is that it existed 13 billion years ago. If the whole galaxy suddenly winks out and disappears tomorrow, we won't know about it for another 13 billion years. For that matter, maybe it already has! +++ It's very simple. A light-year is the distance light travels in one year, so what you see of a galaxy 13 billion light-years away, is as it was 13 billion years ago. ' You'll have to live another 13 billions years to see it as it is "now"! :-)
If a radioactive isotope had a half - life of 1 billion years how much of it would be left after 2 billion years?
1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years.
How has ships changed over the years?
it hasnt
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.
How has musical theatre changed over the years?
It Hasnt
How has employment in India changed over the years?
it hasnt
How many years of fuel are on the sun?
About another 5 billion years worth.
What is the Sun's life span?
G2 stars like the Sun live about 10 billion years. Our Sun is about 4.5 billion years old, so it has another 5 billion years left.
What is the sun's lifetime in years?
The sun is estimated to have a total lifetime of about 10 billion years. It is currently in its middle age, about 4.6 billion years old, and is expected to remain stable for another 5 billion years before entering its next phase.
How is it possible the matter that makes up a star today may have been part of another star that died billion of years ago?
Such stars have exploded, for instance in supernova explosions; part of their matter went into space, where it mixed with the previously existing hydrogen and helium. This then became part of our Solar System (or other solar systems).Note that the Universe is about 13.8 billion years old (note: that's the time from the Big Bang); whereas our Solar System is about 4.6 billion years old.
How has hydroelectric power changed over the years?
Lol it hasnt...
How many years ago did the world explode?
The Earth did not explode but it had a fairly heavy collision with a planet called Theia about 4.6 billion years ago.
What will the sun turn into when it runs out?
The Sun will turn into a red giant in about 4.5 billion years time.After another billion years it will turn into a white dwarf.
