Nearest exoplanet

How far away is it? Barnard's star or further?

cheres!!!

S-S

Starlight-Starbright wrote:

How far away is it? Barnard's star or further?

cheres!!!

S-

http://www.hobrad.com/astnotes.htm
"...(the nearest of the sunlike stars with planets, Epsilon Eridani, is 10.5
light-years from Earth), observation has been almost entirely indirect,
based on radial velocity (the gravitational wobble or motion of the parent
stars)." Gliese 876 at 15 ly appears to be the second closest.

Also see, http://planetquest1.jpl.nasa.gov/atlas/atlas_search.cfm

Hello, in the case of Epsilon Eridani there are a few reports loosely
referred to as UFO reports where the "Aliens" indicated that they originated
from there. I think it was the Betty and Barney case in America. The
psychiatrists and Christian leaders discredited the case as they usually do.

However of a planetary system around this star just put some credence on the
UFO report.

I read that there is a planetary system of at least three planets orbiting
Barnards star. However the measurements of the wobble were over a hundred
years and Christian Scientists have used this as an excuse to point to
optical defects in the telescope as the cause. Other obervations by modern
instruments have confirmed the wobble but the integrating time has not been
sufficient to sort out the number of planets. Only one Jupiter sized planet
is suspected so far. The original measurements indicated that the other
planets were lighter and in smaller orbits.

Life on other planets means that "I am not immortal" so watch out for the
Christian thought police.

Chris.

"Klaatu" wrote in message
m...
Starlight-Starbright wrote:

How far away is it? Barnard's star or further?

cheres!!!

S-

http://www.hobrad.com/astnotes.htm
"...(the nearest of the sunlike stars with planets, Epsilon Eridani, is
10.5
light-years from Earth), observation has been almost entirely indirect,
based on radial velocity (the gravitational wobble or motion of the parent
stars)." Gliese 876 at 15 ly appears to be the second closest.

Also see, http://planetquest1.jpl.nasa.gov/atlas/atlas_search.cfm

Chris wrote:
Hello, in the case of Epsilon Eridani there are a few reports loosely
referred to as UFO reports where the "Aliens" indicated that they originated
from there. I think it was the Betty and Barney case in America. The
psychiatrists and Christian leaders discredited the case as they usually do.

However of a planetary system around this star just put some credence on the
UFO report.

I read that there is a planetary system of at least three planets orbiting
Barnards star. However the measurements of the wobble were over a hundred
years and Christian Scientists have used this as an excuse to point to
optical defects in the telescope as the cause. Other obervations by modern
instruments have confirmed the wobble but the integrating time has not been
sufficient to sort out the number of planets. Only one Jupiter sized planet
is suspected so far. The original measurements indicated that the other
planets were lighter and in smaller orbits.

Life on other planets means that "I am not immortal" so watch out for the
Christian thought police.

Chris.

With the clever use of your favourite browser and the first result
returned by Google, you would have found the following :

http://www.solstation.com/stars/eps-erid.htm

"The Star [Epsilon Eridani]

This main sequence, orange-red dwarf (K2 V) is a relative young star
that may be only 500 million to a billion years old. It may have about
85 percent of Sol's mass (RECONS), 84 percent of its diameter (Johnson
and Wright, 1983, page 653), but only about 27.8 percent of its
luminosity (Saumon et al, 1996, page 17). The European Space Agency has
used ultraviolet spectral flux distribution data to determine stellar
effective temperatures and surface gravities, including those of Epsilon
Eridani."

The star's young age of "only 500 million to a billion years" makes it
an unlikely source of space-faring aliens! You need a bit more time for
aliens to develop! If you are very lucky, there might be some primitive
organisms growing on the soil or near undersea vents right now. Give
them a few billion years more to develop into a radio-civilization and
another few thousand and then, just maybe, if they haven't destroyed
themselves or their planet, they might be visiting other planets! Good
luck.

Arnold wrote:

With the clever use of your favourite browser and the first result
returned by Google, you would have found the following :

http://www.solstation.com/stars/eps-erid.htm

"The Star [Epsilon Eridani]

This main sequence, orange-red dwarf (K2 V) is a relative young star
that may be only 500 million to a billion years old. It may have about
85 percent of Sol's mass (RECONS), 84 percent of its diameter (Johnson
and Wright, 1983, page 653), but only about 27.8 percent of its
luminosity (Saumon et al, 1996, page 17). The European Space Agency has
used ultraviolet spectral flux distribution data to determine stellar
effective temperatures and surface gravities, including those of Epsilon
Eridani."

The star's young age of "only 500 million to a billion years" makes it
an unlikely source of space-faring aliens! You need a bit more time for
aliens to develop! If you are very lucky, there might be some primitive
organisms growing on the soil or near undersea vents right now. Give
them a few billion years more to develop into a radio-civilization and
another few thousand and then, just maybe, if they haven't destroyed
themselves or their planet, they might be visiting other planets! Good
luck.

I forgot to add that the same reasoning applies to claims of aliens
coming from the Pleiades or other young stars or clusters.
Another popular star for alien origins is Vega - remember Carl Sagan's
'Contact'?

http://www.astro.uiuc.edu/~kaler/sow/vega.html
"Several other stars similar to Vega (Fomalhaut, Denebola, Merak, for
example) possess similar disks, and astronomers speculate that they may
indicate the existence of planetary systems, though no planets have ever
been detected. Even if they exist, it seems unlikely that life would
have developed to any degree because of the short lifetimes of these hot
stars."


--
25° 45' S
28° 12' E
GMT+2

Join the Planetary Society
http://www.planetary.org

Thanks for that. Obvously it was the wrong star.

Chris.

"Arnold" wrote in message
...
Chris wrote:
Hello, in the case of Epsilon Eridani there are a few reports loosely
referred to as UFO reports where the "Aliens" indicated that they
originated from there. I think it was the Betty and Barney case in
America. The psychiatrists and Christian leaders discredited the case as
they usually do.

However of a planetary system around this star just put some credence on
the UFO report.

I read that there is a planetary system of at least three planets
orbiting Barnards star. However the measurements of the wobble were over
a hundred years and Christian Scientists have used this as an excuse to
point to optical defects in the telescope as the cause. Other
obervations by modern instruments have confirmed the wobble but the
integrating time has not been sufficient to sort out the number of
planets. Only one Jupiter sized planet is suspected so far. The
original measurements indicated that the other planets were lighter and
in smaller orbits.

Life on other planets means that "I am not immortal" so watch out for the
Christian thought police.

Chris.

With the clever use of your favourite browser and the first result
returned by Google, you would have found the following :

http://www.solstation.com/stars/eps-erid.htm

"The Star [Epsilon Eridani]

This main sequence, orange-red dwarf (K2 V) is a relative young star that
may be only 500 million to a billion years old. It may have about 85
percent of Sol's mass (RECONS), 84 percent of its diameter (Johnson and
Wright, 1983, page 653), but only about 27.8 percent of its luminosity
(Saumon et al, 1996, page 17). The European Space Agency has used
ultraviolet spectral flux distribution data to determine stellar effective
temperatures and surface gravities, including those of Epsilon Eridani."

The star's young age of "only 500 million to a billion years" makes it an
unlikely source of space-faring aliens! You need a bit more time for
aliens to develop! If you are very lucky, there might be some primitive
organisms growing on the soil or near undersea vents right now. Give them
a few billion years more to develop into a radio-civilization and another
few thousand and then, just maybe, if they haven't destroyed themselves or
their planet, they might be visiting other planets! Good luck.

Well there must be lots more stars to choose from. Do you know any
canditates stars about 4.5 Billion years old, main sequence like the sun
that are near enough to be of any interest as possible origin stars of these
alien reports. I doubt if the usual contactees have any atrononominal
knowledge. The last contactee I heard of is now incarcerated in a mental
hospital with a possible hole in her head and is learning new skill as on
office clerk.



Chris.

"Arnold" wrote in message
...
Arnold wrote:

With the clever use of your favourite browser and the first result
returned by Google, you would have found the following :

http://www.solstation.com/stars/eps-erid.htm

"The Star [Epsilon Eridani]

This main sequence, orange-red dwarf (K2 V) is a relative young star that
may be only 500 million to a billion years old. It may have about 85
percent of Sol's mass (RECONS), 84 percent of its diameter (Johnson and
Wright, 1983, page 653), but only about 27.8 percent of its luminosity
(Saumon et al, 1996, page 17). The European Space Agency has used
ultraviolet spectral flux distribution data to determine stellar
effective temperatures and surface gravities, including those of Epsilon
Eridani."

The star's young age of "only 500 million to a billion years" makes it an
unlikely source of space-faring aliens! You need a bit more time for
aliens to develop! If you are very lucky, there might be some primitive
organisms growing on the soil or near undersea vents right now. Give
them a few billion years more to develop into a radio-civilization and
another few thousand and then, just maybe, if they haven't destroyed
themselves or their planet, they might be visiting other planets! Good
luck.

I forgot to add that the same reasoning applies to claims of aliens coming
from the Pleiades or other young stars or clusters.
Another popular star for alien origins is Vega - remember Carl Sagan's
'Contact'?

http://www.astro.uiuc.edu/~kaler/sow/vega.html
"Several other stars similar to Vega (Fomalhaut, Denebola, Merak, for
example) possess similar disks, and astronomers speculate that they may
indicate the existence of planetary systems, though no planets have ever
been detected. Even if they exist, it seems unlikely that life would have
developed to any degree because of the short lifetimes of these hot
stars."


--
25° 45' S
28° 12' E
GMT+2

Join the Planetary Society
http://www.planetary.org

"S" == Starlight-Starbright writes:

S How far away is it? Barnard's star or further?

I think it would be the planets orbiting epsilon Eridani, which is
about 3.2 pc distant (~ 10 light years).

--
Lt. Lazio, HTML police | e-mail:
No means no, stop rape. | http://patriot.net/%7Ejlazio/
sci.astro FAQ at http://sciastro.astronomy.net/sci.astro.html

Starlight-Starbright;
http://www.hobrad.com/astnotes=AD.htm
"...(the nearest of the sunlike stars with planets, Epsilon Eridani, is 1=
0=2E5
light-years from Earth), observation has been almost entirely indirect,
based on radial velocity (the gravitational wobble or motion of the parent
stars)." Gliese 876 at 15 ly appears to be the second closest.
Also see, http://planetquest1.jpl.nasa.g=ADov/...las_search.cfm

Obviously this 10.5 LY exoplanet factor imposes a slight butt-sucking
packet handshake drawback of 21 and some odd years at best.

I wonder what the average to/from Venus packet is worth. Actually I
believe that's going to be somewhat of a nearly free local ET area code
call, especially when at times (roughly every 19 months) Venus is
merely 105~110 times as far off as our moon. At least upon Venus
there's been no shortage of green energy for whatever locals and/or
ET's that managed to build their complex community, established
multiple reservoirs, a rather massive/substantial and long bridge, a
fairly nifty tarmac and I do firmly believe a few rigid airships to
boot (if your planet had been getting itself geothermally hotter by as
much as 1=B0K per year, wouldn't you?).

(actually 0.1=B0K shift/year from a tropical 300=B0K to 725=B0K is more
than likely unless that geothermal energy was something stirred up by
way of a fairly massive and unfortunate encounter with the likes of
Jupiter)

Because of the easily available spare and squeaky clean energy (of
mostly dry CO2 and S8 offering the near surface differentials of
4+bar/km and 10=B0K/km), and the rather toasty matter of fact that it's
everywhere and entirely green/renewable energy at that, clearly
represents that almost nothing about Venus is all that insurmountable
for the average exoskeletal nocturnal sorts of their locals, although
visiting ETs with sufficient applied technology could certainly be
quite human like, especially doable compared to the rather pathetic
sub-frozen, continually TBI and easily pulverised likes of Mars.
~

This is about a basic Township, Bridge & Tarmac upon Venus:
http://guthvenus.tripod.com/gv-town.htm
China/Russian LSE-CM/ISS (Lunar Space Elevator)
http://guthvenus.tripod.com/lunar-space-elevator.htm
A few alternative topics from wizard Brad Guth / GASA-IEIS
http://guthvenus.tripod.com/gv-topics.htm

Chris,
If you're out and about looking for the best ever and most local UFO
park-n-ride, look no further than the tarmac that's situated upon
Venus, or are you as intellectually blind as well as dumb and dumber
and thus easily dumbfounded and snookered to boot?

What exactly is it about Venus that you do not understand?

BTW; Venus isn't quite as old as Earth (could be at least a billion
years newer), at least not for it's being within the orbit and as
geologically active (atmospheric building phase) as it is.
~

This is about a basic Township, Bridge & Tarmac upon Venus:
http://guthvenus.tripod.com/gv-town.htm
China/Russian LSE-CM/ISS (Lunar Space Elevator)
http://guthvenus.tripod.com/lunar-space-elevator.htm
A few alternative topics from wizard Brad Guth / GASA-IEIS
http://guthvenus.tripod.com/gv-topics.htm