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Light travels at a constant speed of 299,792,458 meters per second.
Because of the vast distances involved in space, it takes light many years to travel from the source and your eye.
The sun is said to be 8 light minutes away. We see the sun as it was 8 minutes ago.
When we start talking about more distant objects the time increases greatly. We see our nearest stellar neighbour other than the sun (Proxima Centuri) as it was 4.2 years ago. It has taken light that long to travel to us. We see the nearest large galaxy (Andromeda or M31) as it was before modern man evolved some 2.5 million years ago. We see the Fornax Cluster of galaxies as it was about the time of the extinction of the dinosaurs.
The further away we look the longer back in time we are looking.
The most distant object we have seen is believed to be a star that exploded 13.1 billion years ago only 630 million years after the big bang. The star was believed to have collasped into a black hole causing a massive gamma ray burst dubbed GRB 090423.
What else can I help you with?
How old are the stars?
The age of stars can vary widely depending on their size and type. For example, small stars like red dwarfs can live for tens of billions of years, while massive stars can have lifespans of only a few million years. The oldest known stars in the universe are estimated to be around 13.8 billion years old.
Can stars shine for billions of years?
Yes. Most stars do. Our own star, the sun, is about 4.6 billion years old and is expected to last for about another 5 billion years. The smallest, slowest-burning stars are believed to be able to last for trillions of years. Giant stars, which burn quickly, may only last a few million years.
Why do stars that don't exist still stay in the sky?
Stars that don't exist still stay in the sky because the light that we're seeing in the sky is about 10 years old because it takes so long for the light to get here due to the stars being billions of miles away
How old is the light emitted from stars?
Oh, isn't that just a fascinating question? You see, when we look up at the stars in the night sky, we're actually seeing light that has traveled for years and even millions of years. So, the age of the light from each star depends on how far away it is from us - it's like having a little piece of the universe's beautiful history shining down on us every night. Just imagine all the stories that light could tell, all those moments painted with colors only the stars know how to mix. It truly is a mesmerizing thought.
How old is the light from stars that we observe in the night sky?
Oh, there's a wonderful little secret behind those twinkling stars in the night sky! You see, some of the light we see from the stars is actually thousands or even millions of years old, traveling through the vast reaches of space just to say hello to us at this very moment. It's like the stars are artists, creating masterpieces that span both space and time, just for our viewing pleasure. Simply magical.
How big is the average irregular galaxy?
There are about 400 billion stars in galaxies
If a galaxy appeared to be 8 billions years old how far would it have to be located to see it as its is being described?
Eight billions light years. Because that is how long it takes for light to reach us from there.
How old are the stars?
The age of stars can vary widely depending on their size and type. For example, small stars like red dwarfs can live for tens of billions of years, while massive stars can have lifespans of only a few million years. The oldest known stars in the universe are estimated to be around 13.8 billion years old.
How old is the sun and the stars?
The Sun is about 4.5 billions old.
How many galaxies are in the Hubble Ultra Deep Field?
There are at least 3000 galaxies in the Hubble Deep Field North (with billions of stars, planets, and moons in each one; as well as asteroids and nebulae). Their light has taken 13 billion years to reach Earth.
How old are the Suns neighbouring stars?
65 billions of yeas
How old can a fossa get?
more than billions and billions of years
Evidence against the world being billions of years old?
There really is no evidence against the world being billions of years old, mainly because we've proven that the earth IS billions of years old.
Are shooting stars really millions of years old?
A shooting star or meteor is a piece of rock burning up in the atmosphere. Most of these fragments formed around the same time the solar system did, so they are not millions but billions of years old. The light of the meteor itself is something you see as it happens.
How old is a caveman?
like billions of years old
Can stars shine for billions of years?
Yes. Most stars do. Our own star, the sun, is about 4.6 billion years old and is expected to last for about another 5 billion years. The smallest, slowest-burning stars are believed to be able to last for trillions of years. Giant stars, which burn quickly, may only last a few million years.
How old is iron the metal?
Iron has been used for thousands of years. If you are asking how old is the iron itself, it is billions of years old. Iron is formed in stars by nuclear fusion. 5488cd61-e306-44e0-ae28-ea6221a8c13a 1.03.01
