And are they detectable by an alien civilisation or are the signals so weak they have merged with any background radiation?
2006-10-27 06:58:58 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
56 light years, LOL.
They wouldn't be individually detectable, so, your hypothetical aliens would not be able to watch reruns of "Mr. Ed" or "Tammy's In Love." But -- our solar system would appear to be giving off more radio-frequency waves than you'd expect from our star's type, so they'd know that something was going on here.
I recommend reading
The Killing Star
by Charles Pellegrino
which discusses why it might not be a good idea to be broadcasting our presence to the local part of the galaxy.
2006-10-27 07:31:14 · answer #1 · answered by Anonymous · 1⤊ 0⤋
They would have traveled about 50 light years, which is equal to 2.93 x 10^14 miles, and encompasses a lot of other star systems. (For example, Proxima Centauri is "only" 4.2 light years away.) It's hard to say if the signals are strong enough to be detected by anyone who might be listening out there. Considering that I, in Baltimore, cannot receive television signals sent over the air from New York City, the obvious answer would be no. However, it's possible that aliens would have more highly sophisticated technology, capable of rectifying a badly degraded signal, so maybe yes.
2006-10-27 07:00:41 · answer #2 · answered by DavidK93 7 · 1⤊ 0⤋
those pronounces do shuttle into area. They flow outward from Earth at relating to the cost of sunshine. So in case you're taking the year 1900 as whilst the 1st vulnerable synthetic radio indicators have been generated, then Earth is interior the midst of a sphere greater or less 200 mild years in diameter.
2016-11-25 23:32:05 · answer #3 · answered by ? 4 · 0⤊ 0⤋
They are still traveling same as TV signals
they never stop
2006-10-27 07:07:41 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Current year minus year transmitted equals number of light years traveled since emission.
2006-10-27 15:07:47 · answer #5 · answered by elmoreas 1 · 0⤊ 0⤋
In 50 years they would have gone about 300 trillion miles.
2006-10-27 09:39:43 · answer #6 · answered by Nomadd 7 · 0⤊ 0⤋
About 56 light years was the correct answer.
Alpha Centauri is only about 4.3 lightyears away.
2006-10-27 07:07:07 · answer #7 · answered by Anonymous · 1⤊ 0⤋
about to the halfway point between Alpha Centari and earth.
2006-10-27 07:00:50 · answer #8 · answered by Anonymous · 0⤊ 2⤋