Thread  RSS Article on the discovery of 51 Pegasi b, 20 years (!) ago



# 13827 2 years ago on Sat, Oct 22 2016 at 4:28 pm

I recently saw this very interesting article on the discovery of the first exoplanet orbiting a (more or less) sunlike star, 51 Pegasi. 51 Peg b is also the archetype for the class of 'hot jupiters' that orbit their suns in a tight orbit. The amazing issue is that since 1996, literally thousands of exoplanets have been discovered.

user link on www.bbc.com

# 13828 2 years ago on Sat, Oct 22 2016 at 5:07 pm

Interesting article.

Lots of exoplanets have been found, even some rocky (and possibly somewhat Earth-like) planets have been found, if I recall correctly. Of course, the whole Drake equation idea comes into play and the "Goldilocks zone", too.

Until we develop FTL travel, though, it seems they're all going to be too far away for humans to visit unless a migration ship were constructed that could support life for at least centuries. Even then, I haven't done the math for how long it would take at currently reachable speeds.

73's, KD8FUD

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# 13840 2 years ago on Fri, Oct 28 2016 at 9:33 pm

I don't know. It seems like there *should* be E.T. life somewhere out there but the fact we haven't found any signs of life yet leaves the whole idea in question.

"I want to believe"

Don't find fault, find a remedy -- Henry Ford

# 13878 2 years ago on Wed, Nov 16 2016 at 10:17 am

On Saturday, October 29th, 2016 at 2:33 am, Helena said:

I don't know. It seems like there *should* be E.T. life somewhere out there but the fact we haven't found any signs of life yet leaves the whole idea in question.

"I want to believe"

The problem is, leaving extra-terrestrial intelligence aside, we barely have the methods to detect life on exoplanets as of currently. I think, it would depend on the fortunate situation that we can actually detect a microlensing event of an exoplanet, so that we could take a look at the composition of the atmosphere. For instance, presence of atmospheric oxygen would be a potential indicator for life.

# 13879 2 years ago on Wed, Nov 16 2016 at 8:37 pm

The detection of atmospheric methane would be a positive sign too, right?

73's, KD8FUD

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