Latest astronomy nouvelles

With a mass of 3.6 Jupiters and low density, it’s an ideal JWST target for atmospheric study....

If confirmed, the system may join the rare few with exoplanets near hot Jupiters....

Sub-Neptune HD 119130 b was once believed to be ultra-dense. New data however show a much lower mass of about 9 Earths instead of previous estimated of 24.5 Earths, making it much less dense....

These collisions produce shocks and accelerating electrons, leading to varying X-ray intensity based on the stars' orbits....

For instance, in Gliese 1183, star A has stronger X-ray and Hα emissions than B, despite similar rotation speeds....

This planet is smaller than Earth and orbits its star in just 3.15 days....

The star TOI-5005 is bright, making it ideal for further study. The ridge is densely populated with Neptune-sized exoplanets, unlike the desert and savanna regions, where only few were found....

James Webb detected quartz in the atmosphere of exoplanet HD 189733 b. Hot Jupiter HD 189733 b orbits a nearby star HD 189733 that is smaller than the Sun and lies only 64 light years away. The planet orbits close to the star with period only 2.2 days. The temperature in its atmosphere rises to scorching 1000 °C....

This process could explain the existence of LHS 3154 b....