Astronomy:Dark Universe Observatory

The Dark Universe Observatory (DUO) was a planned NASA space-based telescope. It was intended to conduct observations of galaxy clusters on the X-ray range with the intent of finding data related to both dark matter and energy. The project was an Explorers class mission originally meant to go into a 600 km Earth orbit. The telescope concept was eventually superseded by WFIRST.

References

• "Dark Universe Observatory: Into the Darkness Peering". Sonoma State University. Archived from the original on 2004-12-05. https://web.archive.org/web/20041205073418/http://epo.sonoma.edu/duo/index.html. Retrieved 2008-03-03.