Editing Gemini 10 (section)

===EVA 1===
The first of two EVAs on Gemini 10 was a standup EVA, where Collins would stand in the open hatch and take photographs of stars as part of experiment S-13. They used a 70&nbsp;mm general purpose camera to image the southern [[Milky Way Galaxy|Milky Way]] in ultraviolet. After orbital sunrise Collins photographed a color plate on the side of the spacecraft (MSC-8) to see whether film reproduced colors accurately in space. He reentered the spacecraft six minutes early when both astronauts found that their eyes were irritated, which was caused by a minor leak of [[lithium hydroxide]] in the astronauts' oxygen supply.<ref name=collins>{{cite book|last=Collins|first=Michael|title=Carrying the Fire: An Astronaut's Journeys|date=1974|publisher=Cooper Square Press|isbn=9781461660880|type=ebook|chapter=8}}</ref>  After repressurizing the cabin, they ran the oxygen at high rates and flushed the environment system.

After the exercise of the EVA Young and Collins slept in their second 'night' in space. The next 'morning' they started preparing for the second rendezvous and another EVA.