A new study modeled the chemistry of TOI-270 d, an exoplanet between Earth and Neptune in size, finding evidence that it could be a giant rocky planet shrouded in a thick, hot atmosphere. TOI-270 d is ...

Using the radial velocity method, an international team of astronomers has discovered a new extrasolar planet orbiting a ...

Astrology and time measurement evolved together, creating a celestial calendar divided into four seasons, each with three ...