An invisible force surrounding Earth may be creating water on the moon
How does water make it to the moon? - This is the billion-dollar question
Could an ‘Earth-like’ planet be hiding in our solar system’s outer reaches?
Astronomers are racing to explain peculiar orbits of faraway objects at the edge of our solar system.
Mysterious Earth-sized planet could be hiding in plain sight in our Solar System
If such a planet exists, researchers say it would have a mass about 1.5 to...3 times that of Earth!