The Earth and Moon system we know today was formed when Theia, an ancient planet roughly the size of Mars, collided with Earth around 4.5 billion years ago. This is how old Earth was 100 million ...

There's nothing else like Earth and its Moon in the entire Solar System. Other planets either have multiple moons, or none at all, but the mass ratio of our world and its hefty satellite is quite ...

Most scientists agree that a major collision 4.5 billion years ago with a protoplanet named Theia formed the Earth-Moon system. Now, a new study from the University of Nevada argues that ...

the asteroid would have to be gravitationally bound to our existing Earth-Moon system and make multiple circuits around it. These conditions currently don’t apply to the asteroid, which was ...

This peculiarity has intrigued scientists and stargazers alike, prompting exploration into the factors that set Earth apart from other planets with multiple moons. Earth, the cradle of humanity ...

recently told Space.com that multiple lines of evidence point to a lunar origin for 2024 PT5. Planet Earth and a large asteroid in space. Earth's second moon is leaving just before the holidays ...

Starting next week, the moon, Earth’s closest celestial body, will be joined by a new neighbor: a second moon. From Sept. 29 until Nov. 25, astronomers calculate that 2024 PT5— which is what ...

Despite predictions that the asteroid might become a temporary mini-moon whirling around Earth, the space rock ... evolve into these kinds of orbits.” Multiple studies about the object have ...

The length of mini-moon events can vary with some lasting one or more years to complete a full or multiple revolutions around Earth. Others do not complete a full revolution lasting a few months ...