A "classification" is when a volunteer or citizen scientist finishes marking up or sorting one image or other piece of data.

Have you ever wondered how astronomers manage to map out the Milky Way when it's so incredibly vast? One of the most powerful ...

Redshift is the change in the frequency of ... "In the 1920s, Edwin Hubble and George Lemaitre discovered that the more distant the galaxy is, the faster it moves away from Earth," Shamir said.

This distant galaxy was observed for the first time in ... Scientists found that the galaxy had a redshift, or wavelength of light, that showed just how far away it was from Earth.

By looking ever further back in time, the James Webb Space Telescope is at last revealing the first galaxies – and a very strange young cosmos ...

this phenomenon was termed 'redshift'. Figure caption, Lower diagram shows spectrum of light redshifted from a distant galaxy moving away from the Earth The upper diagram shows the absorption ...

These distant celestial bodies are so far away that even the strongest telescopes are usually incapable of distinguishing between the many stars contained within a galaxy. In an exciting turn of ...

You may have noticed that when an ambulance or police car goes past, its siren is high-pitched as it comes towards you, and then becomes low-pitched as it goes away. This happens with light as ...

Hubble's brilliant observation was that the red shift of galaxies was directly proportional to the distance of the galaxy from earth. That meant that things farther away from Earth were moving ...