A SpaceX spacecraft carrying four astronauts is on a pioneering journey circling Earth over its poles after launching Monday ...

The vernal equinox signals the astronomical start of spring in the Northern Hemisphere, with the sun crossing above Earth's equator, moving from south to north, at 5:01 a.m. EST (0901 GMT ...

13 countries are lying on the equator, with 3 continents, and 3 major waterbodies included.