Artwork conceptualising the expanding and accelerating Universe. Since the 1990s, astronomers have known that the Universe is not only expanding, but that the rate of expansion itself is accelerating. This is postulated to occur due to a mysterious d...

... lky Way, these black holes may be dormant. But in active galaxies such as quasars and Seyfert galaxies, those with unusually bright central regions, the black hole is probably feeding off a vast accretion disc - a donut-shaped gas cloud. The gas in t ...

In this artwork we find ourselves floating within the glorious ring system of the gas giant, Saturn. The ring particles are made almost entirely of water ice - which is why they are so bright - and range in size from about a centimetre to a few metre...