How do we think the "hot Jupiters" around other stars were formed?
A)They formed as dense, rocky planets close to the star in the same orbits that they are seen today.
B)They formed as gas giants beyond the frost line and then migrated inwards.
C)Many planets were formed around the star but coalesced into a single planet close in.
D)They formed as gas giants close to the star in the same orbits that they are seen today.

Question

Quizplus · Accepted Answer

"Hot Jupiters" are gas giants that orbit very close to their star, which is unexpected given current models of planetary formation. However, it is believed that they formed further out from their star, beyond the frost line where ices could condense, and then migrated inwards due to planetary interactions or tidal forces. This theory is supported by observations of some hot Jupiters having highly elliptical orbits or being in retrograde orbits, which could be the result of gravitational interactions with other planets or the star itself during their migration.

How Do We Think the "Hot Jupiters" Around Other Stars