Microsoft co-founder Paul Allen has spent the last six years working on a giant aircraft capable of launching rockets to space. Today, his company Stratolaunch Systems literally rolled that plane out of its hangar in the Mojave Desert for the first time ever.

A woman smokes a cigarette next to man wearing a mask during lunch hour at the central business district in Singapore September 29, 2015. The 3-hour haze Pollutant Standards Index (PSI) reached a high of 173 at 8am on Tuesday, according to the National Environment Agency. Slash-and-burn agriculture in neighboring Indonesia has blanketed Singapore in a choking haze for weeks. (Photo by Edgar Su/Reuters)

A tiger cub has a short chat with a chimp. (Photo by Ian Tyas/Keystone Features/Getty Images). 27th November 1979

A Thorneycroft motor van as used during World War I. (Photo by Topical Press Agency/Getty Images). August 1914

A hare runs on a small road as the sun rises in Frankfurt, Germany, Monday, June 12, 2023. (Photo by Michael Probst/AP Photo)

England goalkeeper Mary Earps saves a penalty from Jennifer Hermoso of Spain during the FIFA Women's World Cup Australia & New Zealand 2023 Final match between Spain and England at Stadium Australia on August 20, 2023 in Sydney, Australia. (Photo by Charlotte Wilson/Offside/Offside via Getty Images)

An Iraqi soldier plays with an accordion found on the street while on patrol in the western neighborhood of Tamuz in Mosul on May 23, 2017, after the area was retaken during the ongoing offensive against Islamic State (IS) group fighters. (Photo by Ahmad Al-Rubaye/AFP Photo)

“Early morning in Mandawa, rural Rajasthan: it was the morning of Diwali and the streets were swept by smiling women in brightly coloured sarees as I took an early morning cup of chai. Celebrations started later, when darkness fell”. (Photo by Hamish Scott-Brown/Guardian Witness)