It was a light sail?? Bruce Johnson (06 Nov 2018 18:42 UTC)
Re: [TML] It was a light sail?? Sudnadja (06 Nov 2018 19:30 UTC)
Re: [TML] It was a light sail?? Bruce Johnson (06 Nov 2018 19:50 UTC)
Re: [TML] It was a light sail?? Catherine Berry (06 Nov 2018 20:23 UTC)
Re: [TML] It was a light sail?? Sudnadja (06 Nov 2018 20:57 UTC)
Re: [TML] It was a light sail?? Rupert Boleyn (06 Nov 2018 21:05 UTC)
Re: [TML] It was a light sail?? Catherine Berry (06 Nov 2018 21:12 UTC)
Re: [TML] It was a light sail?? Bruce Johnson (06 Nov 2018 21:31 UTC)
Re: [TML] It was a light sail?? Phil Pugliese (07 Nov 2018 01:10 UTC)
Re: [TML] It was a light sail?? Jeffrey Schwartz (07 Nov 2018 01:16 UTC)
Re: [TML] It was a light sail?? Sudnadja (07 Nov 2018 01:21 UTC)
Re: [TML] It was a light sail?? Phil Pugliese (07 Nov 2018 01:31 UTC)
Re: [TML] It was a light sail?? Tim (07 Nov 2018 01:41 UTC)
Re: [TML] It was a light sail?? Sudnadja (07 Nov 2018 01:46 UTC)
Re: [TML] It was a light sail?? Tim (07 Nov 2018 03:26 UTC)
Re: [TML] It was a light sail?? Sudnadja (07 Nov 2018 06:10 UTC)
Re: [TML] It was a light sail?? Bruce Johnson (07 Nov 2018 15:51 UTC)
Re: [TML] It was a light sail?? Sudnadja (07 Nov 2018 19:23 UTC)
Re: [TML] It was a light sail?? Sudnadja (06 Nov 2018 21:59 UTC)

Re: [TML] It was a light sail?? Tim 07 Nov 2018 01:41 UTC

On Wed, Nov 07, 2018 at 01:10:40AM +0000, Phil Pugliese (via tml list) wrote:
> Any idea how long it would take this to travel here?
> Ob-Trav;A pre-Ancients artifact perhaps?

26 km/s is about 1/11000 of the speed of light, so on the order of
11000 years per light-year travelled.  Backtracking its motion and
those of known stars, the minimum would be on the order of a few
hundred thousand years.  Apparently its colour suggests that it hasn't
been in interstellar space for billions of years, but anything in
between is plausible.

- Tim