2017-12-21

Switch to the dark mode that's kinder on your eyes at night time.

Switch to the light mode that's kinder on your eyes at day time.

Switch to the dark mode that's kinder on your eyes at night time.

Switch to the light mode that's kinder on your eyes at day time.

This Day in History: 2017-12-21

(Died on December 21, 2017)
Bruce McCandless II, US astronaut who conducted the first untethered spacewalk (b. 1937).

photo source: wikimedia.org