But to most of the cosmos, we're just a dot in the vast ether, too. From 804,000 miles away, we can still see Earth in its ...

A ring could have also contributed to one of the coldest periods and biggest mass extinction events in our history. We know what Earth looks like. Famously nicknamed the “pale blue dot” by Carl Sagan, ...

Hera's images of the Earth (visible as a small dot) and the moon were taken between Oct. 10 and 15, according to the European Space Agency (ESA), which runs the mission. Related: Earth sure looks ...