MicrogravityOnboard photo of space shuttle Columbia (STS-73) cargo bay payload - the United States Microgravity Laboratory-2 (USML-2) with an earthview. Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/amf-9515866/Copy URL to clipboard> DownloadShareTakenOctober 20, 1995ProducerMSFCSize1000x631pxPIA Number9515866