energy levels / inverse-square law / tiny high-energy packets / electronic device / produce energy / galaxy / electricity / energy present / hot interstellar gas / dark energy / lowest energy state / pure energy / rarefied gas / vacuum energy / inverse square law / energy density / maximum energy / less energy / enormous systems / gas glows / energy generation / thermal energy / gas spirals / warm gas / hot gas / fundamental law / lowest energy / higher energy orbital / gravitational potential energy / gas streaming / energy / /
Organization
European Space Agency / National Aeronautics and Space Administration / /
Person
Edwin Hubble / /
Position
outside observer / left end / /
ProvinceOrState
California / /
Technology
radiation / X-ray / Deep Space Network / microwave / flash / /
A absolute brightness: The apparent brightness a star would have if it were placed at a standard distance of 10 parsecs from Earth. absolute zero: The lowest point on any temperature scale, the temperature at which all (