In a remarkable discovery, astronomers have unearthed a six-planet system orbiting the star HD 110067, where the celestial ...

Scientists found two Earth-sized planets and a third candidate orbiting a nearby double star system, TOI-2267.

More planets are changing directions. First, Mercury circled retrograde. This week, Mars is reversing course and Neptune starts spinning forward again. Going retrograde and stationing direct are the ...

Jupiter will reach its highest point in the sky around dawn, when, from mid-northern latitudes, it will appear about 20 ...

As telescopes have become more powerful, it’s turned out our solar system is not the only game in town: There are millions of ...

Planetary retrograde is an apparent backward motion as seen from Earth, creating the illusion of planets moving in reverse ...

WASHINGTON, Nov 29 (Reuters) - They are the most common type of planet observed in our Milky Way galaxy - two to three times the diameter of Earth but smaller than Neptune, and orbiting closer to ...

Shedding light on the gravity of the situation. Most people do not realize that many of the stars and heavenly bodies they see in the sky no longer exist. In fact, many have ceased to exist for ...

What just happened? A newly identified object spotted in two infrared sky surveys may be the most substantial evidence for the elusive Planet Nine – a potential Neptune-sized world orbiting hundreds ...

After marking the 30th anniversary of the discovery of the first exoplanet around a sun-like star, we now look forward to what the next 30 years might offer. With the number of exoplanets having ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers ...