The question 'how was the moon formed?' has intrigued astronomers for many years. In recent years, the giant impact theory, which claims that a planet called Theia, which was about the same size as ...

New research suggests Earth's Moon formed from the catastrophic collision of our planet with its "sister" planet, Theia, born nearby. This "sibling" planet theory, supported by iron isotope evidence, ...

Our Moon is slowly drifting away from Earth, not just due to tidal friction as previously thought. New research suggests ancient planetary impacts and Earth's internal cooling, causing contraction and ...

About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

Scientists have proposed a shocking new theory for the origin of the moon, and their calculations suggest Earth once had a secret world hiding right next door. Astronomers believe that the moon was ...

It’s strange to think that something as ordinary as summer heat or winter cold traces back to a moment of utter chaos ...

Every planet in the solar system leans, some gently, some dramatically, and that tilt quietly shapes everything from our ...

Scientists have identified three Earth-sized planets orbiting two stars in the TOI-2267 system. Remarkably, planets transit around both stars — a first in astronomy. The system’s compact, cold nature ...

The final Moon event is a “supermoon” on Christmas eve, Thursday 24 December. This occurs when a full Moon falls when the ...

Planetary size was determined pre-spacecraft by measuring the planet's angular diameter and its distance from Earth (in AU, later converted to terrestrial units after the AU was accurately measured ...

Astronomers have confirmed the existence of a “rogue planet”, a world about the size of Saturn, that is wandering through ...

Bright full moons, dazzling meteor shower displays and remarkable total eclipses will give stargazers plenty of reasons to ...