us.2u Posted May 20, 2005 Share Posted May 20, 2005 As these are the nearest solar stars like our sun; doe's anyone know if they have a planetary orbit around them? my guess is probably (no) & that we will never find ETI....us.2u Link to comment Share on other sites More sharing options...
C3H5(NO3)3 Posted May 22, 2005 Share Posted May 22, 2005 I'm pretty sure Proxima Centuari is the closest star to our Sun, and yes, it does have planets and they follow the same pattern as ours. Link to comment Share on other sites More sharing options...
Ophiolite Posted May 22, 2005 Share Posted May 22, 2005 The key data on Epsilon Eridani: epsilon Eridani b 0.86 MassJupiter, orbit 3.3 AU year 2502.1 ± 20.1 d epsilon Eridani c?? 0.1 MassJupiter??, orbit 40 AU??, year 280 yr.?? [existence uncertain] Nothing has yet been found for Tau Ceti. C3H5... what is your source for Proxima Centauri planetary system? It is a runt of a star and thus far thought to be devoid of planets. This is the 'bible' for all extra-solar planets: http://www.obspm.fr/encycl/encycl.html Link to comment Share on other sites More sharing options...
C3H5(NO3)3 Posted May 22, 2005 Share Posted May 22, 2005 Lmao, I'm just going with what my science teacher taught us....he says proxima centuari is the closest star to us, and has it's own planets, wow, guess not. Link to comment Share on other sites More sharing options...
Janus Posted May 22, 2005 Share Posted May 22, 2005 Lmao, I'm just going with what my science teacher taught us....he says proxima centuari is the closest star to us, and has it's own planets, wow, guess not. Well, Proxima (Alpha Centauri C) is the closest star, but it is unknown as to whether is has any planets. It is a small red dwarf that is part of the Alpha Centauri system which also includes Alpha Centauri A & B. 'A' is a yellow star of about the same mass as the sun, and could have planets in the habital zone, but it is unknown as to whether it does. Link to comment Share on other sites More sharing options...
C3H5(NO3)3 Posted May 23, 2005 Share Posted May 23, 2005 Ooooooh, alright, thanks. Link to comment Share on other sites More sharing options...
Ophiolite Posted May 23, 2005 Share Posted May 23, 2005 Your teacher may well be right. It looks as if planet formation is a wholly natural and commonplace process. We know that there is a lot of dust and gas left around stars once they have formed. We also know it tends to gather together, quite rapidly, into lumps, then rubble, then asteroids (and comets) and planetesimals, and proto-planets, then planets. Proxima Centauri probably fits this picture too, but we don't know. We shall before long. Link to comment Share on other sites More sharing options...
us.2u Posted May 25, 2005 Author Share Posted May 25, 2005 Thank you for that link Ophiolite it's a great source of info......it's a pity some other 'Astronomers' didn't stick to the topics of 'Astronomy' rather than pick fault, & doing so, making themselves a few light-years off topic...oh-welll WHATEVER...us.2u Link to comment Share on other sites More sharing options...
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