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ArXiv

The arXiv (pronounced "archive", as if the "X" were the Greek letter Chi or Χ) is an archive for electronic preprints of scientific papers in the fields of mathematics, physics, computer science, quantitative biology and statistics which can be accessed via the Internet. In many fields of mathematics and physics, almost all scientific papers are placed on the arXiv. As of March 2008, arXiv.org contains over 469,000 e-prints, with roughly four thousand new e-prints added every month.

Astronomy Magazine

Astronomy (ISSN 0091-6358) is a monthly American magazine about astronomy. Targeting amateur astronomers for its readers, it contains columns on sky viewing, reader-submitted astrophotographs, and articles on astronomy and astrophysics that are readable by nonscientists.

Bad Astronomy

Bad Astronomy: Misconceptions and Misuses Revealed, from Astrology to the Moon Landing "Hoax" is a non-fiction book by the American astronomer Phil Plait, also known as the Bad Astronomer. The book was released in 2002 and deals with various misunderstandings about space and astronomy, such as sounds being audible in space (a misconception because in space, sound has no medium in which to propagate). Many ideas relating to space that are mistaken but nevertheless often portrayed in popular movies are corrected and explained. He also dedicates much of the book to debunking the idea of a Moon Landing Hoax and explains why astrology should not be taken seriously. A part of the book describes the moon's tidal effects and explains the Coriolis effect, why the sky is blue, the Big Bang, etc.

Carl Zeiss International

Manufactures astronomical telescopes, observatories, domes, optics, focal plane instrumentation and LIDAR equipment. Company also manufactures products for healthcare, vision, measurment and analysis, research, sports, microelectronics, photography and projection applications.

Earth & Sky

Earth & Sky concise daily podcasts featuring the words and insights of scientists from around the world.

Edmund Scientific Corporation

Edmund Scientific Corporation was a company based in Barrington, New Jersey that specialized in supplying surplus optics and other items via its mail order catalog and Factory Store. During four decades from the 1940s to the 1970s Edmund Scientific was virtually unique in its offerings to scientific hobbyists.

European Southern Observatory

The European Southern Observatory (ESO, whose official name is the European Organisation for Astronomical Research in the Southern Hemisphere), is an intergovernmental research organisation for astronomy, composed and supported by fourteen countries from Europe. Created in 1962, to provide state-of-the-art facilities and access to the Southern Sky to European astronomers, it is famous for building and operating some of the largest and most technologically advanced telescopes in the world, such as the New Technology Telescope (NTT), the telescope that pioneered active optics technology, and the VLT (Very Large Telescope), consisting of four 8-meter class telescopes and four 1.8-m Auxiliary Telescopes.

Google Moon

Google Moon is a service similar to Google Maps that shows satellite images of the Moon. It was launched by Google on July 20, 2005, the 36th anniversary of the Apollo 11 lunar landing. The landing site of each of the Apollo missions is shown on the satellite image, providing more information on each mission as the user zooms in.

Greenwich Mean Time

Greenwich Mean Time (GMT) is a term originally referring to mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, although strictly UTC is an atomic time scale which only approximates GMT in the old sense. It is also used to refer to Universal Time (UT), which is the astronomical concept that directly replaced the original GMT. In the UK, GMT is the official time only during winter; during summer it's British Summer Time.

Heavens-Above

Heavens-Above is a non-profit web site dedicated to observing and tracking satellites orbiting the Earth. They provide detailed star charts showing the trajectory of the satellites against the background of the stars as seen when looking up.

HubbleSite

News center, gallery, discoveries, sci-tech, fun and games, and reference desk. HubbleSite is produced by the Space Telescope Science Institute's Office of Public Outreach.

Hubble Space Telescope

The Hubble Space Telescope (HST; also known colloquially as "the Hubble" or just "Hubble") is a space telescope that was carried into orbit by a Space Shuttle in April 1990. It is named for the American astronomer, Edwin Hubble. Although not the first space telescope, the Hubble is one of the largest and most versatile, and is well known as both a vital research tool and a public relations boon for astronomy. The HST is a collaboration between NASA and the European Space Agency, and is one of NASA's Great Observatories, along with the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.

MarsBase dot net

Provides scientific data of various kinds such as the time on Mars, Sun and Earth rise/set, mission countdowns and news.

NASA

The National Aeronautics and Space Administration (NASA, pronounced /ˈnæsə/) is an agency of the United States government, responsible for the nation's public space program. NASA was established on July 29, 1958, by the National Aeronautics and Space Act. In addition to the space program, it is also responsible for long-term civilian and military aerospace research. Since February 2006 NASA's self-described mission statement is to "pioneer the future in space exploration, scientific discovery, and aeronautics research." NASA's motto is: "For the benefit of all". The motto of NASA's Office of Education is: Shaping the Future: Launching New Endeavors to Inspire the Next Generation of Explorers.

National Radio Astronomy Observatory

The National Radio Astronomy Observatory (NRAO) is a Federally Funded Research and Development Center of the United States National Science Foundation operated under cooperative agreement by Associated Universities, Inc for the purpose of radio astronomy. NRAO designs, builds, and operates its own high sensitivity radio telescopes for use by scientists around the world.

National Space Science Data Center

The National Space Science Data Center (NSSDC) is a department in NASA's Solar System Exploration Division. It was created to archive NASA space science mission data. The NSSDC is located at NASA's Goddard Space Flight Center in Greenbelt, Maryland. The NSSDC provides free access to NASA data for the public and researchers. The data provided is both raw scientific data as well as images.

OpticsPlanet

OpticsPlanet, Inc is one of the leading optics suppliers with a wide selection of sport optics, tactical and military gear, microscopes, and designer eyewear. We offer serious product knowledge, exceptional customer service, and outstanding product selection. We at OpticsPlanet.com stock thousands of items and constantly expand our product lines and add new state-of-the-art products - binoculars, telescopes, spotting scopes, monoculars, microscopes, digital binoculars, film cameras, military and law enforcement gear, rifle scopes, heat seekers, laser sights, holographic weapon sights, radar guns, digital cameras, sunglasses, GPS, goggles, tripods, laser rangefinders, accessories, prescription sunglasses, night vision goggles, air chairs, flashlights, and much more!

Planetary Society

The Planetary Society is a large, publicly supported, non-government and not-for-profit organization that has many research projects related to astronomy. It was founded in 1980 by Carl Sagan, Bruce Murray, and Louis Friedman, and has members from 125 countries around the world. The society's mission is "To inspire and involve the world's public in space exploration through advocacy, projects, and education." The Society is dedicated to the exploration of Mars and the rest of the Solar System, the search for Near Earth Objects, and the search for extraterrestrial life.

SKY-MAP.ORG

SKY-MAP.ORG: (or WIKISKY.ORG) is an interactive information-management system which encompasses the entire outer space. The basic element of the system is a detailed map of the whole star sky that mirrors more than half a billion celestial objects. No additional instructions are necessary to browse the map or change its scale. The process is very easy. By using the smallest scale, the user can view the whole star sky at once. Using the largest scale, the user can view tiny areas with the most distant and weakest sky objects.

Space.com

Space.com is a space and astronomy news website. Its stories are often syndicated to other media outlets, including CNN, MSNBC, Yahoo!, and USA Today. Space.com was founded by CNN anchor Lou Dobbs and Rich Zahradnik, in July 1999. At that time, Dobbs owned a sizeable share of the company, and, in an unexpected move, left CNN later that year to become Space.com's chief executive officer. Dobbs stated that he had always been "interest[ed] in space and space exploration", in part motivated by a belief in extraterrestrial intelligence and a desire to seek them out. The move came as a surprise to many and was the source of intense media speculation.

Space Telescope Science Institute

The Space Telescope Science Institute (STScI) is the science operations center for the Hubble Space Telescope (HST; in orbit since 1990) and for the James Webb Space Telescope (JWST; scheduled to be launched in 2013). STScI is located on the Johns Hopkins University Homewood campus in Baltimore, Maryland and was established in 1981 as a community-based science center that is operated for NASA by the Association of Universities for Research in Astronomy (AURA). Today, in addition to performing continuing science operations of HST and preparing for scientific exploration with JWST, STScI manages and operates the Multi-mission Archive at Space Telescope (MAST), the Data Management Center for the Kepler mission and a number of other activities benefiting from its expertise in and infrastructure for supporting the operations of space-based astronomical observatories. Most of the funding for STScI activities comes from contracts with NASA's Goddard Space Flight Center but there are smaller activities funded by NASA's Ames Research Center, NASA’s Jet Propulsion Laboratory, and the European Space Agency (ESA). The staff at STScI consists of scientists (mostly astronomers and astrophysicists), software engineers, data management and telescope operations personnel, education and public outreach experts, and administrative and business support personnel. There are approximately 100 Ph.D. scientists working at STScI, 15 of which are ESA staff who are on assignment to the HST project. The total STScI staff consists of about 350 people.

SpaceWeather.com

Science news and information about the Sun-Earth environment.

Students for the Exploration and Development of Space

Students for the Exploration and Development of Space (SEDS) is an international student organization whose purpose is to promote space exploration and development through educational and engineering projects.

The Nine Planets

The Nine Planets, a multimedia tour of the Solar System by Bill Arnett, was one of the first examples of multimedia websites. It first appeared on the World Wide Web in 1994 and, as was common for high traffic websites at the time, was widely mirrored. It contains encyclopedic information about the Solar System with a page for each of the major bodies illustrated with photographs, mostly from NASA. The nine planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.

The Universe in Color

Deep sky, solar system, and terrestrial images, including equipment information, and helpful articles.

TimeAndDate.com

This site includes lots of information that is time and date related, such as yearly and monthly calendars, countdown counters and the world clock which shows current time in cities all over the world.

United States Naval Observatory

The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States. Located in Northwest Washington, D.C., it is one of the few observatories located in an urban area; at the time of its construction, it was far from the light pollution generated by the (then-smaller) city center.

Windows to the Universe

Windows to the Universe is a user-friendly learning system covering the Earth and Space sciences for use by the general public. Windows to the Universe has been in development since 1995. Our goal is to build an internet site that includes a rich array of documents, including images, movies, animations, and data sets, that explore the Earth and Space sciences and the historical and cultural ties between science, exploration, and the human experience.