Proposed top-level domain

The Domain Name System of the Internet consists of a set of top-level domains which constitute the root domain of the hierarchical name space and database. In the growth of the Internet, it became desirable to expand the set of initially six generic top-level domains in 1984. As a result new top-level domain names have been proposed for implementation by ICANN. Such proposals included a variety of models ranging from adoption of policies for unrestricted gTLDs that could be registered by anyone for any purpose, to chartered gTLDs for specialized uses by specialized organizations. In October 2000, ICANN published a list of proposals for top-level domain strings it had received.

Geographic proposals

SCO

SCO may refer to:

In arts and entertainment

Businesses and organizations

Places

In science and technology

Zeta1 Scorpii

Zeta¹ Scorpii (Zeta¹ Sco, ζ¹ Scorpii, ζ¹ Sco) is a B-type hypergiant star in the constellation of Scorpius. It has an apparent visual magnitude which varies between 4.66 and 4.86. It is a member of the Scorpius OB1 association, and the open star cluster NGC 6231, also known as the "northern jewel box" cluster. It is also one of the most luminous stars known in the Galaxy, with an estimated bolometric luminosity of nearly a million times the Sun's.

The stellar wind from this supergiant is expelling matter from the star at the rate of 1.55 × 10⁻⁶solar masses per year, or roughly the equivalent to the Sun's mass every 640,000 years.

ζ¹ Scorpii forms a naked eye double with ζ² Scorpii, but the stars are merely coincidentally near in the line of sight from Earth. ζ² is a mere 155 light years distant and much less luminous in real terms. ζ¹ Scorpii can also be distinguished from ζ², due to the latter's orange hue especially in long-exposure photographs.

References