The teen ‘Lava World’ has not yet been discovered
Exploitants come in many different types and sizes, and it is helpful to look at them in different places throughout their lives to understand the formation and evolution of the planet. NASA’s exponential hunting satellite TES has recently detected four “teenage” explosions, including a dramatic lava world orbiting very close to its star.
TES investigated two young stars who are close to and related to each other, TOI 2076 and TOI 1807. She found four orbital nets in orbit around her that are rarely in the middle stage between recent birth and maturity.
“The planets in both systems are in a temporary, or adolescent phase of their lives,” said Christina Hedges, an astronomer at the Bay Area Environmental Research Institute in Moftfield, Selfin Valley, and NASA’s Ames Research Center. “They are not newborns, but they are not inhabited either. Learning more about the planets at this adolescent stage will help us understand older planets in other systems.
The three orbitals of TOI 2076, each of which is called a mini-Neptune, because they are between Earth and Neptune.
But the dramatic planet is actually the one that orbits the TOI 1807. The planet, TOI 1807 b, is so close to its star that it only stays there for 13 hours a year. This planet is the youngest version of a planet, called a very short-lived planet, just discovered. If the planet is mostly rocky and does not have a deep atmosphere, researchers predict it could be covered in lava lakes or even in the oceans.
The planet is also bombarded with UV radiation because its star is so young and dynamic. The planet is estimated to be 22,000 times more affected by the amount of UV radiation from its star than the Earth meets the Sun. And the other star is moving in the same way.
“Stars produce 10 times more UV light when they reach the age of the sun,” said George Chow, an astronomer at the University of Southern Queensland in Australia. “Because the sun could have been so active at one time, these two systems could provide a window into the initial state of the solar system.”