"Should extraterrestrials ever intercept it, that fact may speak volumes. It suggests that however primitive and ignorant we were, something in us was expansive enough to consider that we were not the universe’s only scientists, nor its only explorers."

Read the stories of early space exploration from the original NASA transcripts.

SDO is designed to help us understand the Sun's influence on Earth and Near-Earth space by studying the solar atmosphere on small scales of space and time and in many wavelengths simultaneously.

How telescopes have expanded our view of the universe. from NOVA.

ESO, the European Southern Observatory, is the foremost intergovernmental astronomy organisation in Europe and the world’s most productive astronomical observatory.

3D visualization of the Sun and other nearby companion stars and planetary systems.

The Antikythera mechanism is an ancient mechanical calculator (also described as the first known mechanical computer) designed to calculate astronomical positions. from wikipedia.

Chromoscope has been created using public-domain datasets from a number of all-sky astronomy projects. It lets you easily move around the sky and fade between wavelengths using a simple user-interface to illustrate the similarities and differences between what is visible at each wavelength.

Unlike most models, which are compressed for viewing convenience, the planets here are also shown at their true-to-scale average distances from the Sun. That makes this page rather large - on an ordinary 72 dpi monitor it's just over half a mile wide, making it possibly one of the largest pages on the web.

Daily podcast of the International Year of Astronomy

NASA's Great Observatories — the Hubble Space Telescope, the Spitzer Space Telescope, and the Chandra X-ray Observatory — have collaborated to produce an unprecedented image of the central region of our Milky Way galaxy.

moonbell transforms the topography of the moon into sound.

the first observations made by the new Wide Field Camera 3 aboard the upgraded NASA Hubble Space Telescope.

The plan is to test a controversial theory: the possibility that gravity drops slightly during a total eclipse.

contemplation of voyager’s billion-year future. from nyt.

a customized list of products.

a celebration of astronomy. from new scientist.

life and death of stars. from seed.

international year of astronomy 2009, a slideshow. from seed magazine.

exhibits throughout the world in 2009.

from nasa's spitzer space telescope.

from discover magazine.

from nasa's spitzer space telescope.

annual perseid meteor display. from new scientist.

a service of the internet archive.

the pathfinder club is designed to be an introduction to the night sky.

galaxies, nebulae, and stars from the national optical astronomy observatory.

the enigma of dark energy, explained.