The fall equinox comes this Wednesday at 3:21 p.m. ET. The day heralds the start of autumn in the northern hemisphere, which houses about 90% of Earth's population. For the southern hemisphere ...

During the equinox, the Earth’s axis and its orbit line up so ... The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and ...

Coming from Latin, the word 'equinox' translates as 'equal night' and marks the point at which the Earth is experiencing the same length of day and night, about 12 hours each. The Earth is tilted ...

The shortest day of the year heralds the arrival of winter; after this, days finally start getting longer in the northern hemisphere, which houses about 90% of ... time of an equinox, your shadow ...