[HN] Non-gas giant has 73 times Earth’s mass, bewildering its discoverers
[HN] Non-gas giant has 73 times Earth’s mass, bewildering its discoverers
Neptune-sized planet has a density similar to pure silver.
[ comments | sourced from HackerNews ]
This is the best summary I could come up with:
Today, a large international team of researchers is announcing the discovery of something our models can't explain.
It places it in what's called the "hot Neptune desert," where intense radiation from the star drives off a planet's atmosphere.
Neptunes that reach the hot desert state end up stripped down to their rocky cores, which leaves them as super-Earths.
To find out, the researchers used ground-based observatories to track the movement of its host star as the gravitational pull of TOI-1853 b shifted as it moved through its orbit.
The researchers involved in its discovery spend a fair bit of text describing just how much of an outlier this makes TOI-1853 b.
"It occupies a region of the mass–orbital [distance] space of hot planets that was previously devoid of objects, corresponding to the driest area of the hot-Neptune desert," the researchers conclude.
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