The question is a bit vague! It's important to clarify what you mean by "lab in orbit." There have been many different laboratories in orbit over the years.

To give you the best answer, please tell me:

* What kind of lab are you thinking of? Was it a space station, a satellite dedicated to scientific research, or something else?

* When was it in orbit?

For example, if you are thinking of a space station, you might be thinking of:

* The International Space Station (ISS): The largest and most complex laboratory in orbit, currently home to astronauts from multiple countries.

* Mir: A Soviet/Russian space station that operated from 1986 to 2001.

* Skylab: A US space station that operated in the early 1970s.

Once you provide more details, I can tell you the name of the lab you're thinking of!