Trappist 1 d
Trappist-1 d is an exoplanet found orbiting the nearby red dwarf star Trappist-1, in 2017.[1]
In August 2025 spectroscopic measurements performed the James Web Space Telescope determined that Trappist-1 d was unlikely to have an atmosphere.[2][1]
References
[edit | edit source]- ↑ 1.0 1.1
"Webb Narrows Atmospheric Possibilities for Earth-sized Exoplanet TRAPPIST-1 d". NASA Science. 2025-08-13. Archived from the original on 2026-04-08. Retrieved 2026-07-07.
The exoplanet TRAPPIST-1 d intrigues astronomers looking for possibly habitable worlds beyond our solar system because it is similar in size to Earth, rocky, and resides in an area around its star where liquid water on its surface is theoretically possible. But according to a new study using data from NASA’s James Webb Space Telescope, it does not have an Earth-like atmosphere.
- ↑
M.J. Way (2025-02-05). "TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead?". The Astronomical Journal Letters. 980 (1). Retrieved 2026-07-07.
TRAPPIST-1 d is generally assumed to be at the boundary between a Venus-like world and an Earth-like world, although recently published works on TRAPPIST-1 b and c raise concerns that TRAPPIST-1 d may be similarly devoid of a substantial atmosphere.