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Galaxy

Relating to any large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space.

Contributors in Galaxy

Galaxy

black hole

Astronomy; Galaxy

A black hole is the circular dark space that sits at the center of a galaxy which absorbs everything including light so nothing can be reflected or escaped from it. Around a black hole there is a ...

galaxy

Astronomy; Galaxy

A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas dust, and an important but poorly understood component tentatively ...

Christmas bauble

Astronomy; Galaxy

The giant intergalactic bubble of gas floating in space. It's the remnant of a massive star explosion, or supernova, in the Large Magellanic Cloud (LMC) galaxy some 400 years ago. The colorful image ...

active sun

Astronomy; Galaxy

The Sun during its 11-year cycle of activity when spots, flares, prominences, and variations in radiofrequency radiation are at a maximum.

Milky Way bubbles

Astronomy; Galaxy

The two giant bubbles of high-energy gamma rays protruding from the Milky Way, each spanning 25,000 light-years across, roughly the size of the galaxy itself. According to NASA, the bubbles are ...

Hubble

Astronomy; Galaxy

American astronomer who showed that there are galaxies beyond our own and that they are constantly moving outwards from ours.

Quasar

Astronomy; Galaxy

A very bright, star like object that is extremely far away from the Earth. A quasar produces several thousand times as much energy as the entire Milky Way galaxy.

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