Russian cosmonaut back after record 879 days in space

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Russian cosmonaut Gennady Padalka has returned to Earth after a record-setting 879 days in space, the longest cumulative time spent in space. Concerns about the physical effects of long-duration spaceflight include muscle and bone loss, as well as vision impairment, despite exercise routines in space. Previous records were held by Valeri Polyakov at 437 days and Sergei Avdeyev at 379 days. Currently, two astronauts are on the International Space Station for a year-long mission, with one having a twin on Earth for comparative studies. The discussion highlights the ongoing research into the impacts of extended space travel on human health.
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Russian cosmonaut back after record 879 days in space

Russian cosmonaut Gennady Padalka returned safely to Earth with two other astronauts from the International Space Station Saturday with the record for having spent the most time in space.

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3 years in space is a long time! Isn't there proof of muscle and bone loss?
 
Good question? Same question arises in my mind? Does they physically not affected?
 
879 days when summed over his 5 trips. Sure, muscles and bones get weaker, even with daily exercise in space. Vision suffers from space as well.

Valeri Polyakov has the record for the longest spaceflight, at 437 days. Sergei Avdeyev with 379 is second. Two more were a full year in space (all with MIR).
Currently there are two astronauts on the ISS for a 1-year stay. One of them has a twin brother on Earth, so scientists can compare them directly.
 
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mfb said:
One of them has a twin brother on Earth, so scientists can compare them directly.
Wow that is very handy!
 

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