Despite the lack of a dedicated mission to the planet, scientists have learned plenty through ground observations and space telescopes ...

If Earth's history were a calendar year, humans would not appear until the last few minutes before midnight on Dec. 31.

As the Earth faces unprecedented climate change, a look into the planet's deep past may provide vital insights into what may ...

A distant white dwarf hosts an Earth-like planet in an orbit that might be similar to Earth’s if it survives the Sun’s red giant phase.