The ancient planet, known as Theia (or sometimes Orpheus), was completely destroyed. The majority of its mass and a part of ...

The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

Their origins have long baffled geologists, but a groundbreaking study has introduced a bold hypothesis: these subterranean giants might be remnants of Theia, a lost planet that collided with ...

These structures are theorized to contain remnants of Theia's materials ... the stars ‘Snowball Earth’: How volcanoes saved our planet from its deepest freeze in history ...

The heavy core of Theia sank deep into Earth, enlarging our planet's core. The two bodies' mantles mixed and thus bulked up our planet. And the crusts were scattered far into space. What happened ...