Scientists Find Distant Extrasolar Planet With Atmosphere 16
MurthyDN writes "The New York Times (Free Registration, man) has an article which says
'The Hubble Space Telescope has detected an extensive atmosphere of hydrogen enveloping and escaping from a newfound planet of a distant star, scientists reported yesterday.
The discovery comes as no surprise, astronomers say, but is important nonetheless as apparent confirmation that the extrasolar planets observed so far not only are much like the solar system's Jupiter in size but also are similarly huge gaseous bodies.'"
Deja vu all over again (Score:1)
Dupe. [slashdot.org]
The link's different, but the story's the same.
Guess the
Old news (Score:5, Informative)
Can you imagine what kind of weather it would have (Score:2)
It would be receiving much more energy from its primary. Much more significant tides, too. The storms on this "Hot Jupiter" would make our Jupiter's Great Red Spot look like a spit in a bucket.
(If it comes from a star other than the Sun, would you still call it "insolation"?)
Hot Jupiter could lose entire atmosphere? (Score:2)
IANAPhysicist, but is seems to me there is an implication of this suggestion that the articles don'e mention.
Short version: Losing all that mass will boost "hot jupiter" to a higher orbit. Wouldn't a "hot jupiter" become a merely "warm jupiter" before it lost its entire atmosphere?
This is the same phenomenon that stripped out the Hydrogen and Helium from the Earth's atmosphere. The individual gas molecules in a planet's atmosphere, have a range of velocities
Re:Hot Jupiter could lose entire atmosphere? (Score:2)
(Also, if it is spinning rapidly and NOT isothermal, you'll still get the bulk of the escape occuring off to one side of the planet-star line. It takes a while for an a
Hot Jupiter moves out (Score:2)
Bode's law: Tidal forces influenced the smaller planet's orbits to be in harmony with the real Jupiter. The same thing would happen if there were a hot jupiter in an inner orbin, wouldn't it?
And, as "hot jupiter" slowly boosted itself to the orbit of a merely "warm jupiter", would these smaller planets move outward too?
They aren't ejecting 90% of their mas
Re:Hot Jupiter moves out (Score:2)
A hot Jupiter would have destroyed/removed any smaller inner planets as it migrated in. So there's no real issue there.
Re:Hot Jupiter moves out (Score:2)
I visited your web-site, and looked at your talk about Pluto and Charon. I saw that yo
Re:Hot Jupiter moves out (Score:2)
(The Titus-Bode