Planet's Discovered

[us.2u]

Approx a year or two ago there was an aticle in the media about a system of planets orbiting around it's own sun just like ours I can't remember if it was a tabloid issue or on a radio or T.V. Bullettin...However at the time I was really enthralled but I have not heard a thing since has anyone else heard about this as well & got any further updates? or have I got my wires crossed somehow?...I think apparently this system of planets were many light years away...

[Martin]

Approx a year or two ago there was an aticle in the media about a system of planets orbiting around it's own sun just like ours I can't remember if it was a tabloid issue or on a radio or T.V. Bullettin...However at the time I was really enthralled but I have not heard a thing since has anyone else heard about this as well & got any further updates? or have I got my wires crossed somehow?...I think apparently this system of planets were many light years away...

 

Over a hundred systems have been found. Here is a catalog

http://www.obspm.fr/encycl/catalog.html

 

* * Global statistics:

* * * 119 planetary systems

 

* * * 135 planets

 

* * * 14 multiple planet systems

 

 

In other words, 119 stars have been found which have one or more planets.

Of these, 14 stars have been observed to have multiple planets.

 

A total of 135 planets (extrasolar, that is outside the solar system) have been found

 

check out the catalog, it gives details about size of planet and type of orbit

and class of star (whether it is sun-like or not)

[ed84c]

and of course the americans got it [something] wrong and some guy doing his phD corrected them all!, sorry thats not very well explained ill try and find a source if possible.

 

Therefore proving british people are more intelligent than americans.

[Martin]

check this one out

http://www.obspm.fr/encycl/HD28185.html

the star is like the sun (in mass and brightness)

the planet's distance from its star is about 1 AU (like the earth from sun)

the orbit is circular, not eccentric, so it stays the same distance

this is a good system.

the planet may have satellites (like the moons of Jupiter and Saturn) on which life could flourish

 

-----------------------------

For comparison, here are some multiplanet systems. One of these may be the one you saw news about

 

 

here is a system with 4 planets

(the inner 3 wd be too hot and the outer one wd be too cold)

http://www.obspm.fr/encycl/55Cnc.html

 

here is a system with 3 planets

(the inner one wd be too hot, the outer two have eccentric orbits)

http://www.obspm.fr/encycl/ups-And.html

 

here is a system with 3 planets

(the one 1.5 AU from star might be OK temperature, but has eccentric orbit)

http://www.obspm.fr/encycl/HD160691.html

[ed84c]

dont hold your breath to when we'll find out.

[Rasori]

Notice that those numbers are for life as we know it. Nothing prevents anything from living on hotter or colder planets, we just don't know what could

[Ophiolite]

What may turn out to be more important than the temperature is the stability of the environment. It is doubtful any planet could maintain a stable environment for the greater part of its sun's life. It is the magnitude and rate of change that are critical. When the magnitude of change has been great (emergence of an oxygen rich atmosphere) or sudden (bolide impact), then life has not fared well. Microbial life is more tolerant of both, hence the Universe is likely populated by relatives of e.coli rather than Jerry Seinfeld.

[us.2u]

Have we received any Data of stable enviroments with a steady magnitude that may look evident of any life support in our solar system or even extra-solar? or maybe joyriding on comets? All Data gratefully receieved...

[swansont]

Microbial life is more tolerant of both, hence the Universe is likely populated by relatives of e.coli[/i'] rather than Jerry Seinfeld.

 

Not that there's anything wrong with that.