A recent theory has emerged suggesting that the answer to Mercury’s unusually large metallic core may lie in the early ...

The Moon will reach perigee at 1:59 P.M. EDT, positioned 229,456 miles (369,274 km) from Earth. Mercury, with a magnitude of 1, will be visible 3° above the eastern horizon one hour before sunrise, ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...