<![CDATA[ Two NASA astronauts will conduct a spacewalk today (March 18) that was delayed by the first-ever medical evacuation of the ISS, and you can watch the action live. ]]>
A spacewalk, or extravehicular activity (EVA), is an activity where astronauts leave the confines of their spacecraft to perform tasks in the vacuum of space. These tasks can include repairs, maintenance, or scientific experiments, and require specialized suits to protect astronauts from the harsh environment of space.
Medical evacuations in space refer to the procedures and protocols established to address medical emergencies aboard spacecraft or space stations. These can include serious health issues that require immediate attention and may necessitate the return of an astronaut to Earth for treatment.