What primary feature distinguishes Hot Jupiters from Jupiter in our Solar System?
Answer
They orbit astonishingly close to their parent stars.
Hot Jupiters are gas giants similar in size and mass to Jupiter but are characterized by extremely short orbital periods, often completing a revolution in just a few Earth days due to their close proximity to the star.
Related Questions
What primary feature distinguishes Hot Jupiters from Jupiter in our Solar System?Why did the discovery of Hot Jupiters challenge existing planet formation models?What is the scientific consensus regarding where Hot Jupiters originally formed?What migration mechanism involves a planet carving a gap in the disk and spiraling inward due to angular momentum transfer?What mechanism is invoked to explain the most extreme or highly inclined Hot Jupiters?What process follows gravitational scattering to result in the characteristic nearly circular orbits of many Hot Jupiters?Which migration pathway tends to leave a planet's orbit aligned with the star’s equatorial plane?Why are detection methods like the transit method biased toward finding Hot Jupiters?If Jupiter orbits at 5.2 AU, what is the approximate orbital distance of a Hot Jupiter?What explains the lack of observed Hot Jupiters orbiting with periods of only a few hours, known as the 'close-in desert'?