We report the discovery of a new ultra-short-period planet and summarize the properties of all such planets for which the mass and radius have been measured. The new planet, EPIC 228732031b, was discovered in K2 Campaign 10. It has a radius of {1.81}-0.12+0.16 {R}\oplus and orbits a G dwarf with a period of 8.9 hr. Radial velocities obtained with

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The distance of the Pegasus Dwarf Irregular Galaxy is discussed in the light of new, deep photometry of the resolved stars taken in the bands V, R, and I of the Johnson-Cousins system. The tip of the red giant branch is identified beyond doubt. From its position, a distance modulus of (m - M)0 = 24.9 +/- 0.1 is derived, in disagreement with the

The peculiar variable star V838 Mon underwent an extremely unusual outburst in early 2002. Unlike a classical nova, V838 Mon has remained very cool throughout its outburst. It is illuminating the most spectacular light echo in astronomical history, which is being imaged regularly with the Hubble Space Telescope (HST) as well as from the ground. In

A further fundamental modification needs to be made to the Freeman (1970) law, such that not only do LSB galaxies possess fainter central surface brightnesses than the canonical Freeman value, but the upper limit is in fact an upper (bright) `envelope' of points in the central disk surface-brightness - log(scale-length) diagram, with slope ~2.

Aims: The role of galaxy mergers in massive galaxy evolution, and in particular to mass assembly and size growth, remains an open question. In this paper we measure the merger fraction and rate, both minor and major, of massive early-type galaxies (M ⋆ ≥ 1011 M&sun;) in the COSMOS field, and study their role in mass and size evolution. Methods: We