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Hot Topic
Deep Space
Cosmic Evolution
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Galactic Mergers and Acquisitions
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| Topic: Cosmic Evolution |
01/17/04 |
| Coincident with announced de-orbiting of Hubble Space Telescope in 2007, a team of astronomers have created the largest color Hubble image yet, showing 80 diverse galaxies and helping visualize how large galaxies like our own Milky Way have evolved among menagerie of different types, sizes and shapes. |
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The Antennae Crash
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| Topic: Cosmic Evolution |
01/07/04 |
| As two massive galaxies collided and NASA's X-ray telescope looked on, a precursor of what may spawn new elements for habitable planets may be taking place in a cycle of creation and destruction. |
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First Images Show Organic Molecules
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| Topic: Cosmic Evolution |
12/23/03 |
| There are more organic molecules in the universe than what can be discerned in visible light. Using their new orbital infrared telescope, astrophysicists are finding that the basic building blocks of carbon chemistry have found a primary place in some of the most unlikely spots. |
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Frequent Wet Earths?
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| Topic: Cosmic Evolution |
12/16/03 |
| The way planets form from the debris rings orbiting a parent star is akin to dusting: the size of the swept-up balls can vary from small to large, and close-in or far from the source. Recent computer simulations have modelled planet formation, showing a menagerie of possibilities from tiny Earth-like oases, to dry, hot worlds. |
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Null and No Void
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| Topic: Cosmic Evolution |
11/21/03 |
| A star caught in the act of forming a new planet is a rare event. The process from first forming a dust disk, to aggregating a ring of mass, to finally pulling together a planet happens in the faintest light of a young star. |
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Black Hole Broadcasting
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| Topic: Cosmic Evolution |
10/30/03 |
| Never before have scientists been able to study phenomena in the immediate neighborhood of a black hole in such a detail. Strong infrared flares from the center of our own Milky Way suggest a strongly rotating black hole, judging by the rapid on-off signals being broadcast. |
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The Elegant Universe of Brian Greene
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| Topic: Cosmic Evolution |
10/28/03 |
| Pulitzer-Prize finalist and best-selling author, Brian Greene, discusses the horizons of physics, from the vantage point of one of the leading experts in cosmology and string theories. A Columbia Professor of Physics and Mathematics, Greene describes one promising path for unifying all the natural forces and matter. |
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Swift Gammas: One Minute of Fame, Everyday
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| Topic: Cosmic Evolution |
10/22/03 |
| On the thirtieth anniversary of the discovery of gamma-ray bursts, a new telescope called SWIFT is expected to deepen our understanding of what causes them. Focused in the high-energy part of the electromagnetic spectrum, gamma-ray bursts represent the biggest explosions since the Big Bang. |
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Is Intelligence a Biological Imperative?: Part IV
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| Topic: Cosmic Evolution |
10/20/03 |
| The NASA exobiology branch sponsored a public forum in Palo Alto, CA, on Tuesday, August 26, 2003, entitled, "The Drake Equation Revisited." The forum addressed the questions of estimating the probabilities for finding intelligent life in the universe. This is the fourth in the series of presentations. |
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A Inteligência é um Imperativo Biológico?: Parte IV
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| Topic: Cosmic Evolution |
10/20/03 |
| O ramo de exobiologia da NASA patrocinou um fórum público em Palo Alto, Califórnia, EUA, na terça, 26 de agosto de 2003, intitulado “The Drake Equation Revisited” (“A Equação de Drake Revisitada”). O fórum apresentou as questões sobre a estimativa das probabilidades de se encontrar vida inteligente no Universo. Esta é a quarta na série de apresentações. |
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