Canadian Astronaut, back on Earth after 3 spaceflights. For events and media, please write to email@example.com.
On this day, above all, I honour those who have served. #RemembranceDay
My thoughts are with those battling Australia's drought-driven fires, visible from space. (photo by @astro_luca )
A clear way to watch the Earth's temperature changes over the past 137 years. (from historic & data, via )
Ashes to ashes, dust to stardust. Your brilliance inspired us all. Goodbye Starman.
Genius is so fine and rare. Goodbye Professor Hawking. You inspired and taught us all.
Mental health affects us all. Bell gives 5¢ to mental health programs every time you Tweet #BellLetsTalk . They've donated $80 mill. Thanks!
Leonard, you lived long and prospered, and were an inspiration to me and to millions. Rest in peace.
Tonight this woman returns from space, the all-time US record-holder. Commander Peggy Whitson PhD, you rock. Safe landing, !