ozboz
Guru
- Location
- Richmond ,Surrey
I came across this on a football site , I completely agree with it ,, ( I think ? ) erm ......
“”just ran this enquiry in the NASA Exoplanet Database to compare stellar rotation rate (stars rotate just like the Earth), and look what I found. Those so called Hot Jupiter planets which are Jupiter sized planets which are orbiting very close to their star seem to be slowly migrating inwards, before they will be engulfed by their star, and look what happens to the star, it's rotation rate speeds up.
This I think is really really cool. It shows evidence for the stellar tides. This is when a planet distorts a star creating a bulge on its surface, (like the moon's effect on our Oceans), and then the bulge pulls on the planet causing it to migrate.
This is the same process which goes on between Earth and the Moon only rather than moving inwards, the Moon is moving outwards at 4cm/year.
In the graph, those stars with an elevated rotational velocity, are only those on the left, i.e. those very close in to their star. Stellar tides are sensitive to distance.
“”just ran this enquiry in the NASA Exoplanet Database to compare stellar rotation rate (stars rotate just like the Earth), and look what I found. Those so called Hot Jupiter planets which are Jupiter sized planets which are orbiting very close to their star seem to be slowly migrating inwards, before they will be engulfed by their star, and look what happens to the star, it's rotation rate speeds up.
This I think is really really cool. It shows evidence for the stellar tides. This is when a planet distorts a star creating a bulge on its surface, (like the moon's effect on our Oceans), and then the bulge pulls on the planet causing it to migrate.
This is the same process which goes on between Earth and the Moon only rather than moving inwards, the Moon is moving outwards at 4cm/year.
In the graph, those stars with an elevated rotational velocity, are only those on the left, i.e. those very close in to their star. Stellar tides are sensitive to distance.