2 months ago Former NASA astronaut Bruce McCandless II passed away on Dec. 21, 2017, at the age of 80. Most known for being the 1st human to free-float on a shuttle spacewalk, he also served as the Apollo 11 moonwalkers’ link to mission control. On Feb. 12, 1984, he ventured further away from the confines and safety of his ship than any previous astronaut had ever been, made possible by a nitrogen jet propelled backpack. After a series of test maneuvers inside and above Challenger's payload bay, McCandless went "free-flying" to a distance of 320 feet away from the Orbiter. This stunning view shows McCandless out there amongst the black and blue of Earth and space. Godspeed Captain.
2 months ago If the Moon didn't spin at all, then it would show its far side to the Earth while moving around our planet in orbit. However, since the rotational period is exactly the same as the orbital period, the same portion of the Moon's sphere is always facing the Earth.