1. A hot, glowing sphere of gas, usually one that emits energy from nuclear reactions in its core.
2. A luminous globe of gas, mainly hydrogen and helium, which produces its own heat and light by nuclear reactions.

Although some stars may shine for a very long time; even, many billions of years, they are not eternal, and have been found to change in appearance at different stages in their appearances.

3. A body; such as, the sun, that produces energy by means of nuclear reactions taking place within it.

The star is held in a stable state by balancing the outward radiation pressure by the inward gravitational force.

1. Two stars orbiting a common center of gravity.
2. A pair of stars revolving around a common center of gravity, held together by their mutual gravitational interaction.
3. A double star; a system containing two or more stars.

In an eclipsing binary, one star goes behind the other periodically, changing the total amount of light that we see.

Those stars that are of such a declination which in a particular latitude they never set.

agency:
start-up fund:
inventors:

"The U.S. government agency that helped invent the Internet now wants to do the same for travel to the stars."