Topic: photographs

Sort: Date | Title | Sort Ascending

Why Do We Put Telescopes in Space? – MinutePhysics

If we have excellent telescopes here on Earth, why is it so important to put telescopes like the Hubble Space Telescope into space? This MinutePhysics video explains the challenges of being an earthbound telescope, fr...

Fire & Ice: Mount Kenya’s Lost Glaciers, revisualized with fire

It was so cold, and the air so thin, on the mountain that even walking with his fire-rake for 20 minutes exhausted Norfolk completely. He was like a man lost on an island, pacing and waving a flame for help. But his c...