Canadian Astronaut, back on Earth after 3 spaceflights. For events and media, please write to firstname.lastname@example.org.
Amazing the pictures you can take from your own backyard - like Alberto did in Italy. Just need skill & a telescope!
One of the finest people I have ever known. Alexei Arkhipovich Leonov, artist, leader, spacewalker and friend, I salute you.
The shared joyful delight of a granddaughter day at Disneyland.
In the last 20 years, people’s living standards have improved almost everywhere in the world. Economic well-being doubled in the poorest countries. World child mortality halved, and children attending school increased from 56 to 80%. #thanksgiving2019
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!
What kills us? If you don't understand the cause, it's very hard to act effectively. @OurWorldInData
Leonard, you lived long and prospered, and were an inspiration to me and to millions. Rest in peace.