But then retreats beyond the orbit of Venus to "cool down ... Earth's seasons are dictated by the tilt of Earth's axis toward the planet's orbital plane. How did astronomers discover that ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

This discrepancy is due to the Earth's tilt and the fact that our planet does not orbit the sun in a perfect circle or at the same speed all year. "Because we're in this elliptical orbit ...

The risk of impact is likely to drop to zero as observations of Asteroid 2024 YR4 continue.

Researchers have discovered an Earth-like planet with such an eccentric orbit that it swoops in and out of its habitable zone throughout its year. Though the super-Earth could theoretically be ...

However, the moon's orbit around Earth is tilted about 5 degrees relative to Earth's orbit around the Sun. This is why lunar eclipses don't occur every full moon—they only happen when the moon's ...

After its close approach to the Earth, 2024 PT5 is slowly receding away in its new, more distant orbit. But surprisingly, the object’s orbit around the sun is similar to Earth’s, suggesting ...