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What else can I help you with?
During which Earth year did the light that you see from Canopus actually leave the star?
The light that we see from Canopus today actually left the star over 310 years ago. Canopus is located approximately 310 light-years away from Earth, so the light we see now started its journey towards us over three centuries ago.
When scientists look at very distant galaxies through powerful telescopes they see the galaxies as they were millions or billions of year ago. Why is this?
The vast distances involved means that the light we see left those galaxies a long time ago.
When we look in the night sky are we seeing the universe as it is?
No. We are seeing as it was. The light we are seeing now was first emitted some time ago. We see the other planets in our solar system as they were a few minutes to a few hours ago. We see stars as they were a few years to a few centuries ago. We see other galaxies as they were millions to billions of years ago.
What does it mean when people look up at the stars and say seeing them how they were millions of years ago?
Generally speaking, this is a gross exaggeration. You see the stars as they were, at most, a few centuries ago. The reason is the light travels at a limited speed. In other words, it takes time to reach you. Distance between stars is measure in light years, which is the distance that light travels in a year. For example, if you look at a star that is 100 light years away, the light you see now left it 100 years ago. The stars you see at night are within the small part of our galaxy that is closest to us. Those stars are at most a few hundred light years away. A handful are less than 10 light years away. The only thing you can with the naked eye see as it was millions of years ago is the Andromeda galaxy, a massive collection of stars 2.5 million light years away. With a telescope you can see farther galaxies.
How do maps Enhance our understanding of an area?
they tell us what it was like years ago in a certain spot
What year did the alpha centauri light leave the star?
If you mean the light we see NOW, it left the star about 4.4 years ago, since that is the distance of the star, expressed in light-years.
During which Earth year did the light that you see from Canopus actually leave the star?
The light that we see from Canopus today actually left the star over 310 years ago. Canopus is located approximately 310 light-years away from Earth, so the light we see now started its journey towards us over three centuries ago.
Do you see stars as they are or as they were?
as they were, the time it took the light to travel from them to us determines how long ago we are viewing, even the light from our sun is 8 minutes old if I remember right.
When was Long As I Can See the Light created?
Long As I Can See the Light was created in 1970.
How long can you drive your 1997 Chevy lumina with the oil light on before changing oil?
If your oil light's on, you should have added oil a long time ago. Check your oil and see if it even registers on the dipstick.
When scientists look at very distant galaxies through powerful telescopes they see the galaxies as they were millions or billions of year ago. Why is this?
The vast distances involved means that the light we see left those galaxies a long time ago.
When scientists look at very distant galaxies through powerful telescopes they see the galaxies as they were millions or billions of year ago Why is this?
The vast distances involved means that the light we see left those galaxies a long time ago.
How long to leave light on for Goldfish?
Goldfish do not need their tank light on for more than 6 hours. Unless you have a lot of live plants in your tank, leaving the light on for a long time will result in an increase in algae in your tank. If you begin to see an algae bloom, then you're best to leave the light off for several days.
Are you seeing into the past when you look at the moon?
Yes but only about 1.3 seconds ago as this is how long light takes to reach us from the Moon.
How many light years can you see into our galaxy?
100 years ago
How were cars long long time ago?
Different, but you didnt say how long ago and that's relative. For some of the earliest-see below.
How can we know how some parts of the universe looked a million years ago?
Light takes time to travel, so light reaching us from a million light years away has taken that long to travel to us. We see what it looked like when the light left.
