It has been known for decades that the observed number of baryons in the local

Theoretical and observational studies of dust condensed in outflows from AGB stars have substantially advanced the understanding

Recently, enormous (> 200 kpc) Lyman-alpha nebulae (ELAN) have been discovered around radio-quiet z~2-3 quasars.

The Sun's atmosphere consists of the photosphere, chromosphere and corona. The solar chromosphere bridges the

Determining the shape of the stellar initial mass function (IMF) and whether it is constant or