How do tidal forces shape a planet's orbital evolution, especially for those in the habitable zone? A recently submitted ...

Mark your calendar so you can catch Mercury, Venus, Jupiter, Saturn, Neptune and Uranus in the sky at the same time.

These linkups happen when several planets appear to line up in the night sky at once. Such parades are fairly common, ...

But it’s not just looks. Rocky composition, general size, orbital behaviors—a lot of those qualities can be the same on both ...

Five planets are currently visible from Earth at the same time, in what’s known as a planet parade – or a planetary alignment ...

NASA’s James Webb Space Telescope finds TRAPPIST-1 d lacks an Earth-like atmosphere, narrowing the search for habitable planets.

This rare planetary alignment will be visible from August 10 but will be best viewed later in the month. Here’s everything ...

Six planets will be visible in our skies for the next few days in the last “planetary parade” of 2025. Jupiter, Mercury, ...

Sky watchers should set their alarms for the early hours as a rare six-planet alignment will dazzle UK skies before sunrise.

Prior to flybys, scientists used mathematical laws and observation to determine the characteristics of the planets.

planets (Mercury, Venus, Earth and Mars) which have solid, rocky surfaces. There are two gas giants (Jupiter and Saturn) which are made of gas and are the largest planets in the Solar System.