منابع مشابه
How Ought One Parameterize the Milky Way?
1. The parameter glut In a well known paper written a quarter century ago, cosmology was described as a search for two numbers (Sandage 1970). As those of you who have attended any of the parallel sessions of Symposium 167 surely appreciate , today's cosmologists nd more than just two numbers interesting. It is likewise clear from the present symposium that the number of interesting parameters ...
متن کاملMilky Way
7 Globular clusters and Population II stars are fossil remnants of the first major epoch of star formation in the Milky Way. SIM Lite will determine precise distances to selected Pop II objects to define a reliable distance scale, and establish reliable absolute and relative ages. Those ages set a minimum age for the Universe and map the early formation history of the Milky Way. The resultant a...
متن کاملHow common is the Milky Way - satellite system alignment ?
The highly flattened distribution of satellite galaxies in the Milky Way presents a number of puzzles. Firstly, its polar alignment stands out from the planar alignments commonly found in other galaxies. Secondly, recent proper motion measurements reveal that the orbital angular momentum of at least 3, and possibly as many as 8, of the Milky Way’s satellites point (within 30 degrees) along the ...
متن کاملAntimatter in the Milky Way
Observational signatures of existence of antimatter objects in the Galaxy are discussed. We focus on point-like sources of gamma radiation, diffuse galactic gamma ray background and anti-nuclei in cosmic rays.
متن کاملOne Ought Too Many ∗
Some philosophers hold that ‘ought’ is ambiguous between a sense expressing a propositional operator and a sense expressing a relation between an agent and an action. We defend the opposing view that ‘ought’ always expresses a propositional operator against objections that it cannot adequately accommodate an ambiguity in ‘ought’ sentences between evaluative and deliberative readings, predicting...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1996
ISSN: 0074-1809
DOI: 10.1017/s0074180900230520