My Breathtaking Ride From Earth to the International Space Station
The rumble of power just got stronger and more insistent as we heard the countdown in Russian through our headsets and then, “Pusk.” Liftoff. It was a very different sensation than my two Shuttle launches, much more gradual and linear as the vehicle burned off enough fuel to lighten for liftoff. The initial acceleration didn’t…
Space & Spaceflight
Col. Chris Hadfield
What’s the Ink in a Standard Rollerball Pen Made Of?
You probably have no idea where the ink in your pen comes from, much less whether it’s a simple factory process or demanding of more expertise. Josh Velson, a chemical engineering consultant for bio and petrochemicals, has your answer. Standard rollerball ink is made from particles of carbon black, a pigment substance. These particles are…
Tech News
Josh Velson