The same galaxy seen at some of the wavelengths examined by the GAMA team |
The lights are going out all over the Universe.
In fact, the energy output of all the suns together appears to have halved in the last 2 billion years. This figure was arrived at by the Galaxy and Mass Assembly (GAMA) survey led by Australian director, Prof Simon Driver, of the International Centre for Radio Astronomy Research, Western Australia. The survey measured the energy output from over 200,000 galaxies over as wide a range of wavelengths as possible.
This discovery was arrived at by comparing the energy output of galaxies far away (and so further away in time