Watch: Jeff Williams's maiden visit inside expandable rooms at Space Station!

Zee Media Bureau

New Delhi: NASA astronaut, Jeff Williams made his first entry along with Russian cosmonaut Oleg Skripochka inside an inflatable add-on room at International Space Station (ISS), according to NASA official blog post.

The two space station crew members entered the 7-foot long habitat at 4:47 a.m. ET on Monday.

U.S. Astronaut shared his experience with NASA and described that the flexible habitat- known as the Bigelow Expandable Activity Module (BEAM), which was fully installed last month- looked "pristine" and was cold inside after entering for the first in a two-year series of tests.

BEAM is expected to stay attached to ISS for two years in order to test its longevity in deep space.

Watch Jeff William's epic journey inside the expandable habitats here: 

(Video Credits: NASA Johnson)