Searching for Meaning in the Universe在宇宙中尋找存在的意義

Credit: Gary Tonge

Credit: California Carnegie Planet Search

宣告及讚詞

2005 年邵逸夫天文學獎

得獎人

2005 年邵逸夫天文學獎將平均分配予

傑弗里‧馬西 Geoffrey Marcy和

米歇爾‧麥耶 Michel Mayor

為表彰最早發現太陽系以外的一個恆星的行星，了解其質量與軌道，從而引導出對行星之產生的革命性的新認識。

Credit: Fahad Sulehria

51 Pegasi b － Bellerophon 柏勒羅芬

Mass 質量 0.468 MJupiter

Orbital Period 公轉週期 4.23 days

Semi-major Axis 軌道半徑　 0.052 AU

Surface Temp. 表面溫度 1022°C

Hot Jupiter 熱木星

Credit: John Whatmough

υAndromedae c

Mass 質量 1.89 MJupiter

Distance 距離 0.829 AU

Planetary System Around HD 69830

Credit: NASA, ESA and G. Bacon (STScI)

OGLE-2005-BLG-390Lb

Mass 質量 5.5 MEarth

Orbital Period 公轉週期 10 yearsSemi-major Axis 軌道半徑 2.6 AUSurface Temp. 表面溫度 -220°C

Red Dwarf 紅矮星

Transiting Exoplanet

Credit: NASA/JPL-Caltech/T. Pyle (SSC)

Credit: NASA/JPL-Caltech/R. Hurt (SSC)

Credit: NASA/JPL-Caltech/M. Swain (JPL/Caltech)

Credit: NASA/JPL-Caltech/R. Hurt (SSC)

Credit: NASA/JPL-Caltech/J. Harrington (Univ. of Central Florida), B. Hansen (UCLA)

Credit: NASA/JPL-Caltech/R. Hurt (SSC)

脈衝星 Pulsar 4U 0142+61

What is a planet?

Galactic Habitable Zone

Credit: Don Dixon

Credit: Sara Chen

Credit: Gary Tonge

N = R* • fp • ne • fl • fi • fc • L Drake Equation

N = The number of civilizations in The Milky Way Galaxy whose electromagnetic emissions are detectable.R* =The rate of formation of stars suitable for the development of intelligent life.

fp = The fraction of those stars with planetary systems.ne = The number of planets, per solar system, with an environment suitable for life.

fl = The fraction of suitable planets on which life actually appears.fi = The fraction of life bearing planets on which intelligent life emerges.

fc = The fraction of civilizations that develop a technology that releases detectable signs of their existence into space.L = The length of time such civilizations release detectable signals into space.

Credit: Gary Tonge

Search for Extraterrestrial Intelligence (SETI)

Arecibo Observatory 阿雷西博望遠鏡Credit: NAIC

Voyager 航行者探測船

Golden Record

Allen Telescope Array

Credit: Andrew J. Lepage

Credit: Bryan Christie

Credit: Bryan Christie

Terrestrial Planet Finder