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Summer solstice is the longest day of the year, but not earliest sunrise or latest sunset

Astronomical summer begins tonight, June 20, at 10:42 p.m. Eastern Daylight Time — the moment of the June solstice. At that instant, the Sun will be directly overhead at the Tropic of Cancer, at a ...
WRAL

Yearly cycle shows how sun progresses north to south

A subsolar point has been moving southward since it paused for a moment over the Tropic of Cancer at the June Solstice which marked the beginning of summer. It will now continue southward until the ...
Nature

Dawn–dusk asymmetry in the Kelvin–Helmholtz instability at Mercury

Mercury is the closest planet to the Sun, with an orbital radius that varies between 0.309–0.469 AU over a Mercury year (88 Earth days). It has a dipole-like magnetic field similar to Earth, but its ...