"The mission of the American Astronomical Society is to enhance and share humanity’s scientific understanding of the Universe."

"Cosmologist Sean Carroll attacks -- in an entertaining and thought-provoking tour through the nature of time and the universe -- a deceptively simple question: Why does time exist at all? The potential answers point to a surprising view of the nature of the universe, and our place in it. (Filmed at TEDxCaltech.)"

Features more than 3,600 videos on many topics including astronomy.

"Astronomy Picture of the Day (APOD) is originated, written, coordinated, and edited since 1995 by Robert Nemiroff and Jerry Bonnell. The APOD archive contains the largest collection of annotated astronomical images on the internet."

"NASA.gov brings you images, videos and interactive features from the unique perspective of America’s space agency."

"The mission of the Division of Astronomical Sciences is to support forefront research in ground-based astronomy...."

"The PhysLink.com is a comprehensive physics and astronomy online education, research and reference web site."

Provides a list of internet sources from the Library of Congress.

Science.gov is a gateway to government science information and research results.

ScienceDaily is a science news website that covers many fields of science including astronomy, physics, and health & medicine.

"SOHO, the Solar & Heliospheric Observatory, is a project of international collaboration between ESA and NASA to study the Sun from its deep core to the outer corona and the solar wind." View the gallery webpage for images, movies, presentations, and more.

Astronomy portrayed simply, with less lines and less numbers and more animation.