Astronaut Alex Gerst captured from ISS the Milky Way Galaxy. When you turn back from the Earth and look, vast universe is there. The Milky Way is a barred spiral galaxy with a diameter between 150,000 and 200,000 light-years. It is estimated to contain 100–400 billion stars and more than 100 billion planets.

Credit: Alex Gerst, ESA, NASA

Reference: Alex Gerst’s Tweet
See earthview photo gallery: LiVEARTH