# Photos from galaxy

So, I hear people say blah blah blah is 3 light years away, and here's a photo. So does that mean the photo that we see are actually at least 3 years ago since that's how long it takes that light to travel to Earth for us to take the picture?

• Well, yes, it is three light-years away. Although that's not even to the nearest star, so I'm curious as to what's in the photo in question. I'm guessing it's an arbitrary number, though, right? Dec 24, 2014 at 18:05
• Yes. And I'll have to add some words to make it a legitimate comment! Dec 24, 2014 at 19:32
• Looking into space is looking back into time. With light moving at only 29.98 centimeters (11.8") per nanosecond, your view of the far wall of whatever room you're currently sitting in is multiple nanoseconds older than your view of the LCD display directly in front of you. Dec 25, 2014 at 15:31
• The exact time you are looking back will depend on your relative motion w.r.t. the distant object, which gives rise to the famous Andromeda Paradox. Dec 25, 2014 at 19:59