1981-Present Day Space Exploration By Abby.kislow 1984 1984- First untethered spacewalk, by Bruce McCandless II NASA 1998 1998-First multinational space station, which is the largest man-made object built in space to da 2001 2001- First landing on an asteroid by USA 2015 2015- First flyby of dwarf planet Pluto by the US 2016 2016-Astronaut Scott Kelly and Cosmonaut Mikhail Kornienko return to Earth after their 340-day space mission, longest recorded time up in space
