van Leeuwen, Floor Institute of Astronomy, University of Cambridge, Cambridge, United Kingdom.
- What will be measured
- Need for the data
- How measurements will be performed
- Mission sequence and schedule
- Mission operations
- Links to Primary Literature
- Additional Readings
December 19, 2013 saw the launch of Gaia (Fig. 1), a very special satellite designed to measure the positions of around a billion stars and other objects in the sky with unimaginable accuracy. It will do so over a period of at least 5 years, deriving crucial information on the distances and motions of stars from the changes in those positions. Those data will, among other purposes, allow astronomers to build a much improved map of our Milky Way Galaxy, its current state, and its formation history. The Gaia satellite is a Cornerstone Mission of the European Space Agency and follows in the footsteps of the successful Hipparcos mission, which took place in the early 1990s.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 9000 highly qualified scientists and 43 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information