Visible-light astronomy
Videos
Visible-light astronomy encompasses a wide variety of astronomical observation via telescopes that are sensitive in the range of visible light. Visible-light astronomy or optical astronomy differs fro
1858 fresco by Giuseppe Bertini depicting Galileo showing the Doge of Venice how to use the telescope
One of Hubble's most famous images, Pillars of Creation, shows stars forming in the Eagle Nebula (2014 image).
Night sky
Videos
The night sky is the nighttime appearance of celestial objects like stars, planets, and the Moon, which are visible in a clear sky between sunset and sunrise, when the Sun is below the horizon.
Stars in the night sky
The Milky Way is brighter in the Southern Hemisphere than in the North. (Photo taken at La Silla Observatory)
Paranal Observatory nights. The concept of noctcaelador tackles the aesthetic perception of the night sky.
The Milky Way contains billions of stars, arranged in two strikingly different structures: halo and disc.