Astronomy

There is a whole Universe of different shapes, sizes and colours of galaxies. We shall look at some of the 'ordinary' galaxies and then...

Each week new observations add to the tally of 'hot-Jupiters' and 'super-Earths' found in orbit around nearby stars.  Other...

Detailed observations of galaxies, clusters, and the fine structures in the cosmic microwave background have refined the age of the...

When light from the Sun and the Moon enters our atmosphere, it is sometimes reflected, refracted and dispersed by tiny ice crystals,...

X-radiation is only emitted by the hottest and most energetic parts of the Universe - sites of gigantic explosions, plasma heated to...

Our only natural satellite has been an object of fascination for humankind since prehistory. Despite being the only other place in the...

Interstellar space is not truly a vacuum devoid of matter. Mixed into vast diffuse clouds of atomic gas are minute grains of silicate...

Changes in the Sun's output can endanger health, power supplies and satellite systems.  To prepare adequately for such events and...

Beyond the Solar System, all astronomers have to work with is the light that falls to the Earth from distant cosmic objects. Newer,...

Robbert Dijkgraaf's focus is on string theory, quantum gravity, and the interface between mathematics and particle physics, bringing...