The planet, named L 98-59 d, is covered with magma and ​enveloped by a noxious and fiercely hot, sulfur-rich atmosphere.

Most stars in the cosmos are small, cool red dwarfs, yet the only intelligent life we know orbits a relatively rare yellow dwarf under a blue sky. That mismatch is at the heart of the “red sky paradox ...

The search for alien life often sparks the imagination with images of extraterrestrial beings and strange worlds. However, a new theory is shifting the focus—what if life elsewhere in the universe ...