Growing Peace, a US-based non-profit team that seeks to \"spread tranquility in a harming world\", released the flag near Milwaukee, Wisconsin, on 17 August.
The balloon captured video with a GoPro cam as it floated 21.1 miles (34.1 km) above earth for 3 hrs.
Organisers said they wanted to state area gay pleasant, \"in a peaceful, stunning way\".
The balloon gave the flag just over three hours in space prior to it returned to earth
The charitable group wants gay people to really feel safe in every edge of the universe
The balloon as well as its flag went back to planet, yet the episode was recorded in striking video that reveals the earth's surface from above, with the sunlight beaming behind the flag.
The charitable team said: \"The primary function of this affirmation is to sustain the ongoing defend the fundamental human rights of our LGBTQ [Lesbian, Gay, Bisexual, Trans as well as Queer] family, moving us closer to an universal understanding that all people are worthy of to live openly and also like freely without anxiety as well as discrimination.\"
It added that the feat stressed the need for the gay area to have a safe area in every edge of the universe.
As well as gay legal rights activism, Growing Peace runs altruistic help projects as well as ecological efforts across the world.
It recently made headings throughout the Republican politician National Convention in Cleveland, Ohio, with a signboard that showed US governmental prospect Donald Trump as well as then-aspiring Republican candidate Ted Cruz poised to kiss, with the motto \"Love exceeds Hate. End homophobia\".
The team spent for a signboard in Ohio revealing Donald Trump and Ted Cruz in a clinch in July
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