User Panel
User Panel
User Panel
|
Posted: 4/28/2022 5:05:23 PM EDT
[#1]
Quoted: Having a discussion about the following quoted statement. Some people believe that it is wrong. Some people believe the speaker is contradicting himself. Some believe it's accurate. What say the hive? "When we hear the term light-year, we need to realize it is not a measure of time but a measure of distance, telling us how far away something is. Distant stars and galaxies might be millions of light years away, but that doesn’t mean it took millions of years for the light to get here, it just means it’s really far away." 
|
|
|
|
Posted: 4/28/2022 5:06:16 PM EDT
[#2]
Quote HistoryQuoted: If something is x light years distant then it took x years for the light to get here. |
|
|
|
Posted: 4/28/2022 5:08:41 PM EDT
[#3]
Quoted: Having a discussion about the following quoted statement. Some people believe that it is wrong. Some people believe the speaker is contradicting himself. Some believe it's accurate. What say the hive? "When we hear the term light-year, we need to realize it is not a measure of time but a measure of distance, telling us how far away something is. Distant stars and galaxies might be millions of light years away, but that doesn’t mean it took millions of years for the light to get here, it just means it’s really far away." Called light year for a reason. Pretty self explanatory. And distance is time according to relativity, or Yahoo Serious or something like that. |
|
|
|
Posted: 4/28/2022 5:16:00 PM EDT
[#4]
Light travels 186,000 ft/second....
One light year is a distance of 60 sec/min x 60 min/hr x 24 hours/day x 365 days/year x 186,000 ft/sec = 5,865,696,000,000 ft = 1,110,027,272 miles in a year So when something is listed as 100 million light years, it is a disdance that is 100 x the bold number in miles away I was very fortunate to have a very good physics teacher in college that was big into light speed, travel, measuring speed and went into great detail in his lectures.... |
|
|
|
Posted: 4/28/2022 5:23:18 PM EDT
[#5]
Quote HistoryQuoted: Light travels approximately 186,000 One light year is a distance of 60 sec/min x 60 min/hr x 24 hours/day x 365 days/year x 186,000 So when something is listed as 100 million light years, it is a distance that is 100 x the bold number in miles away 
|
|
|
|
Posted: 4/28/2022 5:24:34 PM EDT
[#6]
Quote HistoryQuoted: Light travels 186,000 ft/second.... One light year is a distance of 60 sec/min x 60 min/hr x 24 hours/day x 365 days/year x 186,000 ft/sec = 5,865,696,000,000 ft = 1,110,027,272 miles in a year So when something is listed as 100 million light years, it is a disdance that is 100 x the bold number in miles away I was very fortunate to have a very good physics teacher in college that was big into light speed, travel, measuring speed and went into great detail in his lectures.... It's a little quicker than that. |
|
|
|
Posted: 4/28/2022 5:25:48 PM EDT
[#7]
Quote HistoryQuoted: Ehhh it's complicated relativity and all. Time varies, and your point of view varies. If we have been moving towards an object, but slower then the object is moving away from us, our observations of light are not accurate in relation to it's actual location. except of course for the whole compression and expansion of space thing to keep the speed of light a constant. |
|
|
|
Posted: 4/28/2022 5:27:42 PM EDT
[#8]
Quote HistoryQuoted: Light travels 186,000 ft/second.... One light year is a distance of 60 sec/min x 60 min/hr x 24 hours/day x 365 days/year x 186,000 ft/sec = 5,865,696,000,000 ft = 1,110,027,272 miles in a year So when something is listed as 100 million light years, it is a disdance that is 100 x the bold number in miles away I was very fortunate to have a very good physics teacher in college that was big into light speed, travel, measuring speed and went into great detail in his lectures.... State checks out. |
|
|
|
Posted: 4/28/2022 5:30:53 PM EDT
[#9]
Are they factoring in the time you have to pull over so your wife can pee?
|
|
|
|
Posted: 4/28/2022 5:34:15 PM EDT
[#10]
Quote HistoryQuoted: We're talking rate (speed) not acceleration. Technically the acceleration of light is zero as the speed (in whatever direction) is constant unless affected by an external influence. Quote HistoryQuoted: Quoted: Quoted: I always understood light-year to be the distance that light travels in a year. Yes. So it's technically both. Light travels at 186,XXX miles per second edit: I know it's not "186,000 miles per sec", I dropped that in because I don't recall exactly. I understood the doubling of the term to basically be "per second, every second" so as you say unless there's an external influence it's just always going 186,XXX miles per second... |
|
|
|
Posted: 4/28/2022 5:36:08 PM EDT
[#11]
Quote HistoryQuoted: but it's confusing cause it could also mean.... well... a year... but... hmmm... i don't know what op was smoking or what people he talks to smokes. seems cut and dry to anyone paying attention Quote HistoryQuoted: Quoted: If something is a million light years away it's a million light years away.  but it's confusing cause it could also mean.... well... a year... but... hmmm... i don't know what op was smoking or what people he talks to smokes. seems cut and dry to anyone paying attention I don't even think it's a religion thing, it's a big misunderstanding of the science. If something is a million light years away, if you started tomorrow going the speed of light, it would take a million years to get there. The vastness of space is jaw-dropping. |
|
|
|
Posted: 4/28/2022 5:37:20 PM EDT
[#12]
Quote HistoryQuoted:  State checks out. Quote HistoryQuoted: Quoted: Light travels 186,000 ft/second.... One light year is a distance of 60 sec/min x 60 min/hr x 24 hours/day x 365 days/year x 186,000 ft/sec = 5,865,696,000,000 ft = 1,110,027,272 miles in a year So when something is listed as 100 million light years, it is a disdance that is 100 x the bold number in miles away I was very fortunate to have a very good physics teacher in college that was big into light speed, travel, measuring speed and went into great detail in his lectures.... State checks out. |
|
|
|
Posted: 4/28/2022 5:37:48 PM EDT
[#13]
Quote HistoryQuoted: State checks out. Sorry guys, you got me.....as far as the state checks out....dont know what the fuck that means.....but I guess it means something to you.... I was doing the math real quick....missed it... |
|
|
|
Posted: 4/28/2022 5:38:32 PM EDT
[#14]
Quote HistoryQuoted: This, or more so their religious beliefs. Here is the source of the quote by the way: https://answersingenesis.org/kids/astronomy/why-are-stars-millions-of-light-years-away/ A light-year is a unit of distance, it is the distance that light travels in a vacuum in the span of a year. Quote HistoryQuoted: Quoted: Sounds like someone that can't reconcile their personal beliefs with actual science. A light-year is a unit of distance, it is the distance that light travels in a vacuum in the span of a year. Yeah? I can make the Kessel Run in less than twelve parsecs. Beat that, mister physics. |
|
|
|
Posted: 4/28/2022 5:38:33 PM EDT
[#15]
Quote HistoryQuoted: I understood the doubling to basically be "per second, every second" so as you say unless there's an external influence it's just always going 186,XXX miles per second... Quote HistoryQuoted: Quoted: Quoted: Quoted: I always understood light-year to be the distance that light travels in a year. Yes. So it's technically both. Light travels at 186,XXX miles per second edit: I know it's not "186,000 miles per sec", I dropped that in because I don't recall exactly. I understood the doubling to basically be "per second, every second" so as you say unless there's an external influence it's just always going 186,XXX miles per second... Per second per second is used to discuss acceleration, or change in velocity. If the velocity is constant, there's no need to say that it's going that speed every second. Just an example, if you drop a rock of the roof of a skyscraper, it will accelerate at about 32 feet per second per second. That means for each second it's falling, its speed increases by 32 feet per second. The instant you drop the rock, its speed is zero. One second later, its speed is 32 feet per second. Another second later, its speed is 64 feet per second. And so on and so on. |
|
|
|
Posted: 4/28/2022 5:40:32 PM EDT
[#16]
Quote HistoryQuoted: Sounds like someone that can't reconcile their personal beliefs with actual science. That first post nails it again. |
|
|
|
Posted: 4/28/2022 5:43:57 PM EDT
[#17]
Also, we need to know whether or not the photons are on a treadmill for proper measurment.
|
|
|
|
Posted: 4/28/2022 5:45:17 PM EDT
[#18]
Quoted: Having a discussion about the following quoted statement. Some people believe that it is wrong. Some people believe the speaker is contradicting himself. Some believe it's accurate. What say the hive? "When we hear the term light-year, we need to realize it is not a measure of time but a measure of distance, telling us how far away something is. Distant stars and galaxies might be millions of light years away, but that doesn’t mean it took millions of years for the light to get here, it just means it’s really far away." Well, it is a measurement of distance. I would maybe take issue with the second sentence. IDK how light from galaxies millions of light years away would arrive here at any faster rate than light speed. |
|
|
|
Posted: 4/28/2022 5:46:53 PM EDT
[#19]
Just wait til he finds out about the Kessel Run.
|
|
|
|
Posted: 4/28/2022 5:47:19 PM EDT
[#20]
Quote HistoryQuoted: I don't even think it's a religion thing, it's a big misunderstanding of the science. If something is a million light years away, if you started tomorrow going the speed of light, it would take a million years to get there. The vastness of space is jaw-dropping. Quote HistoryQuoted: Quoted: Quoted: If something is a million light years away it's a million light years away. but it's confusing cause it could also mean.... well... a year... but... hmmm... i don't know what op was smoking or what people he talks to smokes. seems cut and dry to anyone paying attention I don't even think it's a religion thing, it's a big misunderstanding of the science. If something is a million light years away, if you started tomorrow going the speed of light, it would take a million years to get there. The vastness of space is jaw-dropping. The universe is an amazing thing. TRUE Limits Of Humanity – The Final Border We Will Never Cross: "Is there a border we will never cross? Are there places we will never reach, no matter how hard we try? It turns out, there are. Even with sci-fi technology, we are trapped in a limited pocket of the Universe and the finite stuff within it. How much universe is there for us and how far can we go?"  TRUE Limits Of Humanity – The Final Border We Will Never Cross |
|
|
|
Posted: 4/28/2022 5:48:42 PM EDT
[#21]
If the light gets tired it doesn’t go as far right?
|
|
|
|
Posted: 4/28/2022 5:49:13 PM EDT
[#22]
Who thinks it is a measurement of time?
Of course it's a measure of distance.Quote HistoryQuoted: If something is x light years distant then it took x years for the light to get here. My understanding is that this statement is incorrect, as it took it slightly less than X to get here due to expansion of the universe. Such as perhaps if it is 10 Mly away right now, it took 9.999 Mly for the currently observable light to reach us. The quote from the OP is seemingly wanting to make this point, but the wording suggests that the difference is much larger than it actually is. Something that is millions of lightyears distant now still likely took millions of years for its light to reach us, it's just a few years less than its current distance in ly. |
|
|
|
Posted: 4/28/2022 5:49:13 PM EDT
[#23]
7 times around the Earth in 1 second. In a year it goes a realllllllllllllllllly long way……
|
|
|
|
Posted: 4/28/2022 5:54:44 PM EDT
[#24]
Well a light year is 5.8 trillion miles soo
|
|
|
|
Posted: 4/28/2022 5:56:45 PM EDT
[#25]
OP, you in a car driving at the speed of light. It is dark outside and you turn on your headlights. Will they work?
There was a young lady of Wight who travelled much faster than light. She departed one day, in a relative way, and arrived on the previous night. |
|
|
|
Posted: 4/28/2022 5:57:04 PM EDT
[#26]
Quote HistoryQuoted: Also, we need to know whether or not the photons are on a treadmill for proper measurment.   |
|
|
|
Posted: 4/28/2022 6:04:57 PM EDT
[#27]
Wait...are we discussing calculus in GD?
Distance relative to changing time sounds a lot like calculus to me. |
|
|
|
Posted: 4/28/2022 6:05:00 PM EDT
[#28]
Quoted: Having a discussion about the following quoted statement. Some people believe that it is wrong. Some people believe the speaker is contradicting himself. Some believe it's accurate. What say the hive? "When we hear the term light-year, we need to realize it is not a measure of time but a measure of distance, telling us how far away something is. Distant stars and galaxies might be millions of light years away, but that doesn’t mean it took millions of years for the light to get here, it just means it’s really far away." If something is 1 million light years away, the light we are seeing now left that object 1 million years ago |
|
|
|
Posted: 4/28/2022 6:06:21 PM EDT
[#29]
The first part is correct. A light year is 5.879e+12 miles or 5,878,625,370,000 miles.
The second part is incorrect (it does literally take millions of years for the light to reach us). |
|
|
|
Posted: 4/28/2022 6:06:59 PM EDT
[#30]
A ly is a distance marked by time.
c is finite so the ly is equal to the distance light can travel in one earth year. It is almost like 60mph is 1 mile per minute. So in 1 minute the object traveled 1 mile. 1ly = 5.879 × 10 to the 12th. It is an easy way to write that giant number. |
|
|
|
Posted: 4/28/2022 6:08:05 PM EDT
[#31]
Quoted: Having a discussion about the following quoted statement. Some people believe that it is wrong. Some people believe the speaker is contradicting himself. Some believe it's accurate. What say the hive? "When we hear the term light-year, we need to realize it is not a measure of time but a measure of distance, telling us how far away something is. Distant stars and galaxies might be millions of light years away, but that doesn’t mean it took millions of years for the light to get here, it just means it’s really far away." If something is 1 million light years away, the light we are seeing now left that objects position 1 million years ago |
|
|
|
Posted: 4/28/2022 6:10:05 PM EDT
[#32]
 Yes, it does mean it took millions of years for the light to get here and we are looking into the distant past when we gaze into the heavens. I guess schools are too busy teaching the 54 different genders to get around to science. |
|
|
|
Posted: 4/28/2022 6:12:23 PM EDT
[#33]
Quote HistoryQuoted: Per second per second is used to discuss acceleration, or change in velocity. If the velocity is constant, there's no need to say that it's going that speed every second. Just an example, if you drop a rock of the roof of a skyscraper, it will accelerate at about 32 feet per second per second. That means for each second it's falling, its speed increases by 32 feet per second. The instant you drop the rock, its speed is zero. One second later, its speed is 32 feet per second. Another second later, its speed is 64 feet per second. And so on and so on. Quote HistoryQuoted: Quoted: Quoted: Quoted: Quoted: I always understood light-year to be the distance that light travels in a year. Yes. So it's technically both. Light travels at 186,XXX miles per second edit: I know it's not "186,000 miles per sec", I dropped that in because I don't recall exactly. I understood the doubling to basically be "per second, every second" so as you say unless there's an external influence it's just always going 186,XXX miles per second... Per second per second is used to discuss acceleration, or change in velocity. If the velocity is constant, there's no need to say that it's going that speed every second. Just an example, if you drop a rock of the roof of a skyscraper, it will accelerate at about 32 feet per second per second. That means for each second it's falling, its speed increases by 32 feet per second. The instant you drop the rock, its speed is zero. One second later, its speed is 32 feet per second. Another second later, its speed is 64 feet per second. And so on and so on. I get it now - thank you!  |
|
|
|
Posted: 4/28/2022 6:13:02 PM EDT
[#34]
I recall the day where I went around asking college graduates how many times in a decade the sun revolves around the earth.
 Lots answered wrong.
|
|
|
|
Posted: 4/28/2022 6:13:33 PM EDT
[#35]
I always thought a light year just had 1/3 the calories of a regular year.
|
|
|
|
Posted: 4/28/2022 6:15:11 PM EDT
[#36]
Quote HistoryQuoted: I recall the day where I went around asking college graduates how many times in a decade the sun revolves around the earth. Lots answered wrong.
|
|
|
|
Posted: 4/28/2022 6:15:22 PM EDT
[#37]
Quote HistoryQuoted: I recall the day where I went around asking college graduates how many times in a decade the sun revolves around the earth. Lots answered wrong. That's up there with the old "what's heavier, a ton of bricks or a ton of feathers?" 
|
|
|
|
Posted: 4/28/2022 6:18:47 PM EDT
[#38]
Quote HistoryQuoted: I get it now - thank you! Quote HistoryQuoted: Quoted: Quoted: Quoted: Quoted: Quoted: I always understood light-year to be the distance that light travels in a year. Yes. So it's technically both. Light travels at 186,XXX miles per second edit: I know it's not "186,000 miles per sec", I dropped that in because I don't recall exactly. I understood the doubling to basically be "per second, every second" so as you say unless there's an external influence it's just always going 186,XXX miles per second... Per second per second is used to discuss acceleration, or change in velocity. If the velocity is constant, there's no need to say that it's going that speed every second. Just an example, if you drop a rock of the roof of a skyscraper, it will accelerate at about 32 feet per second per second. That means for each second it's falling, its speed increases by 32 feet per second. The instant you drop the rock, its speed is zero. One second later, its speed is 32 feet per second. Another second later, its speed is 64 feet per second. And so on and so on. I get it now - thank you! You bet! I certainly didn't understand it when I first learned it. I needed people to help me. |
|
|
|
Posted: 4/28/2022 6:19:18 PM EDT
[#39]
I always understood Han Solo was using parsecs to describe distance - meaning that he followed a shorter/more dangerous way to travel the Kessel run, not that he was using parsecs to refer to time. People who get bent out of shape over that are first assuming a non-sensical interpretation and then criticizing it as non-sensical.
|
|
|
|
Posted: 4/28/2022 6:20:48 PM EDT
[#40]
Light does not escape a black hole. Therefore gravity effects light as it travels across the universe. Slowing it down ...speeding it up ...warping and bending light. The speed of light in a vacuum is constant.....the speed of light traveling across the universe is not.
|
|
|
|
Posted: 4/28/2022 6:22:08 PM EDT
[#41]
Quote HistoryQuoted: So how can we see them if the earth is only 6000 years old!  Please dont bring them into a semi intelligent conversation |
|
|
|
Posted: 4/28/2022 6:23:19 PM EDT
[#42]
Quote HistoryQuoted: He’s wrong. Everyone knows a light-year has one-third less calories than a regular year. Less filling or tastes great? 
|
|
|
|
Posted: 4/28/2022 6:25:12 PM EDT
[#43]
Quote HistoryQuoted: Is he the one who invented Fettucine? Quote HistoryQuoted: Quoted:  educate yourself and look up Alfred Einstein Is he the one who invented Fettucine? He is Norman’s brother.  Attached File |
|
|
|
Posted: 4/28/2022 6:25:48 PM EDT
[#44]
Quote HistoryQuoted: So how can we see them if the earth is only 6000 years old! Simple...even though as we know it the earth may not have existed until 6000 years ago as you stated. But the space or rather where the earth formed did. So even though the earth may not have existed the light from distant star had reached the area/spot/position the earth occupies long before the the 6000 years you stated. Therefore we can see the light of those stars even though they may be millions of light years away. If we had telescopes powerful enough to see the actual stars or planets those vast distances. We'd be seeing images from thousand, millions of years ago. Based on how may light years those objects are from us. We'd be looking back in time. Simpler term...the sun light that reaches the earth and we see. We are looking back in time. Because it take 8 1/3 minutes for sunlight to reach the earth. Sun could expode and we'd not see it for 8 1/3 minutes afterwards. Then we'd die Some of the stars we see at night no longer exist also. The died, burned out, went super nova ectttt.....thousand/millions of years ago. But we are still seeing their light. At least that's the way I understand it. |
|
|
|
Posted: 4/28/2022 6:27:15 PM EDT
[#45]
Quote HistoryQuoted: So how can we see them if the earth is only 6000 years old! When discussion vast distances and lightyears, a young earth creationist told me that god simply created the light where it needed to be. If we needed to see something 13 billion lightyears away, then he created the light where we needed to see it, so it didn't actually take 13 billion years to get here. I was like  and then  And then  |
|
|
|
Posted: 4/28/2022 6:28:20 PM EDT
[#46]
Scotty: What's that?
Spock Prime: Your equation for achieving transwarp beaming. Scotty: [reads the equation] Imagine that! It never occurred to me to think of SPACE as the thing that was moving!  |
|
|
|
Posted: 4/28/2022 6:28:46 PM EDT
[#47]
Quote HistoryQuoted: I recall the day where I went around asking college graduates how many times in a decade the sun revolves around the earth. Lots answered wrong. 10 years, by definition. What answer did they give? 
|
|
|
|
Posted: 4/28/2022 6:31:19 PM EDT
[#48]
I just call it Warp One.
|
|
|
|
Posted: 4/28/2022 6:32:48 PM EDT
[#49]
Quote HistoryQuoted: I always understood Han Solo was using parsecs to describe distance - meaning that he followed a shorter/more dangerous way to travel the Kessel run, not that he was using parsecs to refer to time. People who get bent out of shape over that are first assuming a non-sensical interpretation and then criticizing it as non-sensical. That's what we call a retcon. It's fine for the canon, but in the end it's just covering up for a guy who wrote down a word he didn't know the meaning of 40 years ago. Nothing more. |
|
|
|
Posted: 4/28/2022 6:35:56 PM EDT
[#50]
but how long did it take the light to get here
|
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
