Catherine Calarco

@catherinecalarco.bsky.social

Board Director and Executive in AI and Healthcare. Radio show Humanity Evolve. LinkedIn - https://www.linkedin.com/in/catherinecalarco

Wow! Just look at this photo of the Milky Way taken by astronaut Don Pettit on the ISS. Taken with a homemade tracker to counteract the orbital motion. It kind of looks like an aurora, but that's actually just clouds just before dawn. The purple colour comes from nitrogen scattering sunlight. 🧪🔭

The dense stars and dust clouds of the Milky Way are visible, running vertically, in the top two thirds of the photo. At the bottom is the Earth, covered in clouds dimly lit by the pre-dawn sun. Running along the curve of the Earth is a hazy purple glow.