US astronaut Peggy Whitson touched down to Earth this morning following her record-breaking 288-day stay at the International Space Station.

Footage on NASA TV showed a Soyuz module containing Ms Whitson, US astronaut Jack Fischer and Russian cosmonaut Fyodor Yurchikhin hit steppe land in central Kazakhstan at the expected time of 2.22am Irish time.

Ms Whitson returns to earth as NASA's most experienced astronaut with 665 days logged in space over a trio of missions.

According to NASA, the US record she set in April leaves her eighth on the Russian-dominated all-time space endurance list, just behind Mr Yurchikhin who has now logged 673 days.

During the 57-year-old biochemist's mission at the ISS she also broke the record for the longest-ever spaceflight completed by a woman, eclipsing Italian astronaut Samantha Cristoforetti's 199-day mission in June.

Jack "2Fish" Fischer, 43, went into space as a rookie but has won over space-watchers with his boundless enthusiasm during his four-and-a-half months aboard the ISS.

He likened the feeling of his spacewalk with Ms Whitson in May, the 200th ISS spacewalk, to a "ginormous fondue pot, bubbling over with piping hot awesome sauce".

"Heading home soon... I hope I infected a few of you with my passion for space. Never stop learning and growing. I dare you to dream!" he tweeted yesterday.

The US pair's expected return to the Johnson Space Centre in Houston has been complicated by the deadly floods and storms that have devastated Texas, however.

NASA said yesterday it was "reviewing" their return "as a result of the impacts of Hurricane Harvey".

Historic rainfall in the region has wrought particular damage on built up Houston and NASA confirmed that the Johnson Space Center had seen "significant" damage in a Friday tweet.

Mission Control remains "operational" the agency said.

The ISS orbits the Earth at a height of about 400km, circling the planet every 90 minutes at a speed of about 28,000km/hr.