courtesy of Dennis Mammana
Planetary Society was founded in 1980 by Carl Sagan,
Bruce Murray, and Louis Friedman to encourage the exploration
of our solar system and the search for extraterrestrial
Society is a nonprofit, nongovernmental organization,
funded by dues and donations from individuals around
the world. With more than 100,000 members from over
140 countries, we are the largest space interest group
on Earth. Membership is open to all people interested
in our mission.
Travel with The Planetary Society and Discover
Mysteries of Planet Earth & our Amazing Universe!
American Association for the Advancement of Science
is the world's largest general science organization
and publisher of the peer-reviewed journal Science.
With more than 138,000 members and 275 affiliated societies,
AAAS serves as an authoritative source for information
on the latest developments in science and bridges gaps
among scientists, policy-makers and the public to advance
science and science education.
Founded in 1886, Sigma Xi, The Scientific
Research Society is a non-profit membership society
of nearly 75,000 scientists and engineers who were elected
to the Society because of their research achievements
or potential. Sigma Xi has more than 500 chapters at
universities and colleges, government laboratories and
industry research centers. In addition to publishing
American Scientist, Sigma Xi awards grants annually
to promising young researchers, holds forums on critical
issues at the intersection of science and society and
sponsors a variety of programs supporting honor in science
and engineering, science education, science policy and
the public understanding of science.