What happens at the summer solstice?
Did you feel it? Well, you probably didn't, unless you're attending a sun worshiping party (in which case it was probably the beat of bongos and strong cider you felt rather than any spacetime warping), but you just lived through a beautifully subtle celestial event: the summer solstice.
The summer solstice for the Northern Hemisphere is the exact moment when the axial tilt of the Earth is at its most inclined toward the sun during its 365 day orbit -- at an angle of 23° 26'. That doesn't happen at midday, it doesn't happen at midnight, it happens at the exact same time for every country on the planet.
Full story at Discovery News.
