There are more than 50 theories for the function of this 12-sided, pentagonal-faced bronze object — but archaeologists have never quite figured it out.

Scientists have discovered a giant planet called TOI-6894b, orbiting a star that should be far too small to have formed it. The discovery could further challenge theories of planet formation.

The bright band of the Milky Way and the faint glow of "zodiacal light" meet above the mountains of Chile's Atacama Desert in this stunning night sky photo.