Question Exoplanets in the visible spectrum

[RobbyQbit]

Have exoplanets been observed in the visible spectrum or are they too distant outside our solar system ?

 

[rod]

Have exoplanets been observed in the visible spectrum or are they too distant outside our solar system ?

Yes, many exoplanets now are listed as imaged. Example, 233 at this site.

http://exoplanet.eu/, you can see this by looking at the detection-type column. Some examples, 51 Eri b, AB Aur b

https://exoplanetarchive.ipac.caltech.edu/index.html, you can see this table too showing *discoverymethod* imaging.

 

[RobbyQbit]

Yes, many exoplanets now are listed as imaged. Example, 233 at this site.

http://exoplanet.eu/, you can see this by looking at the detection-type column. Some examples, 51 Eri b, AB Aur b

https://exoplanetarchive.ipac.caltech.edu/index.html, you can see this table too showing *discoverymethod* imaging.

Thanks for the links Rod

 

[rod]

Some of those exoplanets imaged also show position changes over many years relative to their parent stars. That is a parallel to Galileo watching the tiny lights move around Jupiter. I do see various discussions on the forums about how Einstein GR could be wrong, Newton etc. and quantum gravity could explain it all. So far, nothing from quantum folks predicting these orbital changes that work which we do see taking place in nature, IMO.

 

[Helio]

Hi Robby,

Exoplanet Stats is a thread that gives a summary of things including the methodologies.

 

[Helio]

I do see various discussions on the forums about how Einstein GR could be wrong, Newton etc. and quantum gravity could explain it all. So far, nothing from quantum folks predicting these orbital changes that work which we do see taking place in nature, IMO.

As GR gave us a more robust theory that advanced physics beyond Newton, so too will be one that incorporates quantum physics with GR.

GR never invalidated Newton’s laws. — ask any engineer — but it moved beyond Newton when relativistic events require attention. It also presented gravity differently, but recall that Newton stated he had no idea what gravity is, but he realized it’s effects,

GR has been tested to many decimal places without a hint of deviation, but Einstein devoted his work to producing a more unified theory that combined all the known forces. He failed but others, of course, are “pushing the envelope”.

 

[RobbyQbit]

Hi Robby,

Exoplanet Stats is a thread that gives a summary of things including the methodologies.

Thanks Helio