After traveling through space for more than 26 years, voyager 1 is approaching a new milestone.
Solar System 'twin" found
Astronomers have found a planetary system similar to ours - a Jupiter-like world circling a Sun-like star in roughly the same orbit that Jupiter follows our Sun.
NASA's Origins Program
NASA's Origins Program seeks to answer two enduring human questions that we once considered around ancient campfires, yet still keep alive in today's classrooms: Where do we come from?
Are we alone?
The Extrasolar Planets Encyclopedia
Established February, 1995, this site is currently updated.
The Kepler Mission
A search for habitable planets.
Anglo-Australian Observatory Images
A unique collection of wide-field astronomical photographs, mostly made with the telescopes of the Anglo-Australian Observatory.
SETI Searches Today
The current news about the Search for Extraterrestrial Inteligence.
Help SETI to perform needed mathematical calculations on the huge input of signals picked up on their antenna at Aricebo, Puerto Rico. Contribute time on your computer to the search for extraterrestrial intelligence.
Astronomy Picture of the Day
Each day there is a different image or photograph of our fascinating universe, along with a brief explanation written by a professional astronomer
A listing of the planet candidates discovered outside of our solar system. Plus a number of links to astronomical pages dealing with exoplanets
and the ground- and space-based methods by which they can be detected.
A new map of the radio sky observed at a frequency of 4850 MHz. This map portrays how the sky would appear to the aided radio eye.
Hubble's Best Pix
Hubble Space Telescope evokes a new sense of awe and wonder about the infinite richness of our universe in dramatic, unprecedented pictures of celestial objects.
Virtual Trips to Black Holes and Neutron Stars
Stephen Hawking's Universe
Provides detailed explanations of the most important ideas and developments in human understanding of the universe.
NASA - Planetary Science
Research - Discoveries
Information about the latest research on planets, meteorites, and other solar system bodies being made by NASA-sponsored scientists. Great educational site.
Age and Size of the Universe
NASA news and research related to the Hubble Constant and cosmology.
Look up to see the wonders of the universe -- and know what we're seeing!
The Constellations and their Stars
Find statistics, history, mythology for all 88 constellations and the named stars in them; also contains info on Messier objects; some star charts included.
Hubble Heritage Project
View amazing astronomical gallery of images
SETI Institute Home Page
SETI Institute conducts scientific research on Life in the Universe with an emphasis on SETI, the Search for Extraterrestrial Intelligence.
Life Beyond Earth
Follow space expert Timothy Ferris in the scientific search for extraterrestrial life -- a companion site to the PBS documentary Life Beyond Earth.
SETI At Home
Are we alone? Find out about SETI's radio astronomy search for extraterrestrial intelligence.