Earth images from Alexander Gerst in 4K

Exploring the beauty of our planet, this timelapse video was created with images ESA astronaut Alexander Gerst took while on the International Space Station.  As part of the International Space Station Expedition 40 crew, Gerst has been been spending five and a half months living and working on the ISS for his Blue Dot mission.  The artistic effects of the light trails from stars and cities at night are created by superimposing the individual images and fading them out slowly.

Creative animation explains Theories of Stephen Hawking

No time to read Stephen Hawking's A Brief History of Time? In just two and a half minutes, Alok Jha explains why black holes are doomed to shrink into nothingness then explode with the energy of a million nuclear bombs, and rewinds to the big bang and the origin of the universe?