Astronaut Scott Kelly says Goodbye to NASA

Washington DC: Famed Astronaut Scott Kelly bids adieu to National Aeronautics and Space Administration (NASA) after his 20 years of distinguished service. Kelly took to twitter thanking NASA for an amazing time in space. He posted a photo on twitter showing his daughter around the Johnson Space Centre.

File Photo: Scott Kelly with his daughter

• Kelly recently returns from his space trip on March 1. He spent a year at International Space Station and shared the pictures of the universe.
• Kelly is famous for four famous missions undertaken by him at NASA in the year 1999, 2007, 2010 and 2015.
• He is only the American astronaut to spend 520 days in space.