Aims.We investigate the effect of the gas expulsion on the detectability of clusters and associations typical of the solar neighbourhood, where the star formation efficiency is<35%. The main focus is on the dependence on the initial cluster mass. ...
Seen from different angles, some are energized to glow by the light of a nearby star while others are dark and seen in silhouette against the bright glowing gas of the Orion Nebula. Each is a contemporary analog of our own solar nebula—a location where planets are probably being formed tod...
in the early 1920s, Hubble pointed the largest telescope in the world (on Mt. Wilson in California) at the mysterious Andromeda nebula. He recognized individual stars within the "nebula" and concluded that it was not a cloud of interstellar gas within our Milky Way, but an entire galaxy ...
including sign languages. As far as linguists know, all human languages have syntax, but not all have phonology. The Al-Sayyid Bedouin Sign Language (ABSL) used by a small society in the Negev region of Israel is an emerging