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International Space Station program insignia. The International Space Station ( ISS) is a modular space station (habitable artificial satellite) in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada).

Space is the boundless three-dimensional extent in which objects and events have relative position and direction. In classical physics, physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime.

The Japanese space program (Japanese: 日本の宇宙開発) originated in the mid-1950s as a research group led by Hideo Itokawa at the University of Tokyo.The size of the rockets produced gradually increased from under 30 cm (12 in) at the start of the project, to over 15 m (49 ft) by the mid-1960s.

Calandrelli started a career in science communication when she became a host of Xploration Outer Space in Fox's Xploration Station educational block in 2014. In April 2017, she made several appearances on Netflix episodes of Bill Nye Saves the World. On August 25, 2020 Calandrelli's educational Netflix series titled Emily's Wonder Lab debuted.