These small galaxies are either crammed with stars or they host gigantic black holes. The data astronomers have collected ...

When studying the solar spectrum, researchers often search for specific emission lines: prominent wavelengths emitted by ions as their electrons transition from higher to lower energy levels.

These galaxies – some hundreds of them and called the Little Red Dots – are very red and compact, and visible only during ...

Astronomers exploring the faraway universe with the James Webb Space Telescope, NASA's most powerful telescope, have found a ...

This causes line emission spectra to be produced, as shown below. This is not a continuous spectrum as only light of specific frequencies and specific colours are produced. Different types of ...

When a gas is very hot, it doesn’t emit all wavelengths of light. Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the ...

A recent study underscores the dynamic nature of black holes and extends similar thermodynamic characteristics to Extremely ...

Astronomers exploring the faraway universe with the James Webb Space Telescope, NASA's most powerful telescope, have found a ...

The fact that stimulated emission generates light of the same wavelength means that the output of a laser is a very narrow spectrum, often described as 'monochromatic'. This is usually a good ...

Exoplanets have been discovered with a wide range of environmental conditions. WASP-76b is one of the most extreme with a ...

Ask most people what a galaxy is made up of, and they’ll say it’s made of stars. Our own galaxy, the Milky Way, hosts between ...

If it turns out that mathematical models were wrong, it may be too late to undo the damage caused in the name of “combating” climate change.