Since Kepler's laws of motion dictate that celestial bodies orbit more slowly when farther from the sun, we are now moving at ...

On this date, the Sun appears to sit directly above Earth’s Tropic of Cancer, which marks 23.5° latitude north. Also on the summer solstice, our daytime star appears highest overhead at local noon.

During the summer solstice, the northern hemisphere is tilted towards the sun. As a result of the Earth’s tilt, the sun’s rays are directly over the Tropic of Cancer, which is above the ...

While it marks the start of summer in the north, the event marks the winter solstice in the southern hemisphere, where sunlight is at its lowest angle. When is the longest day of the year in 2025?

This solstice falls between June 20 and 22. Meanwhile, at the winter solstice, the Northern Hemisphere is leaning away from the sun — leading to the shortest day and longest night of the year.

For those north of the equator, the solstice marks the longest day and the shortest night of the year. The Earth spins on a tilt as it revolves around the sun.