ar X iv : a st ro - p h / 99 06 46 3 v 3 1 4 Ju l 1 99 9 The Cosmic Triangle : Assessing the State of the Universe

ar X iv : a st ro - p h / 99 06 46 3 v 4 1 A ug 1 99 9 The Cosmic Triangle : Assessing the State of the Universe

The cosmic triangle is introduced as a way of representing the past, present, and future status of the universe. Our current location within the cosmic triangle is determined by the answers to three questions: How much matter is in the universe? Is the expansion rate slowing down or speeding up? And, is the universe flat? A review of recent observations suggests a universe that is lightweight (...

X iv : a st ro - p h / 99 06 46 3 v 1 2 9 Ju n 19 99 The Cosmic Triangle : Assessing the State of the Universe

The cosmic triangle is introduced as a way of representing the past, present, and future status of the universe. Our current location within the cosmic triangle is determined by the answers to three questions: How much matter is in the universe? Is the expansion rate slowing down or speeding up? And, is the universe flat? A review of recent observations suggests a universe that is lightweight (...

a st ro - p h / 99 06 46 3 v 2 8 J ul 1 99 9 The Cosmic Triangle : Assessing the State of the Universe

The cosmic triangle is introduced as a way of representing the past, present, and future status of the universe. Our current location within the cosmic triangle is determined by the answers to three questions: How much matter is in the universe? Is the expansion rate slowing down or speeding up? And, is the universe flat? A review of recent observations suggests a universe that is lightweight (...

ar X iv : a st ro - p h / 99 02 06 2 v 1 4 F eb 1 99 9 SOURCES OF RELATIVISTIC JETS IN THE GALAXY

ar X iv : a st ro - p h / 05 06 44 9 v 4 1 9 Ju n 20 06 Can a dust dominated universe have accelerated expansion ?

Recently, there has been suggestions that the apparent accelerated expansion of the universe is due not to a cosmological constant, but rather to inhomogeneities in the distribution of matter. In this work, we investigate a specific class of inhomogeneous models that can be solved analytically, namely the dust-dominated Lemâitre-Tolman-Bondi universe models. We show that they do not permit acce...