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The point at which a body in orbit around the Earth reaches its farthest distance from the Earth.

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Vārdšķira: noun
Sinonīms(-i):
Blossary:
Nozare/domēns: Astronomy
Category: General astronomy
Company: Caltech
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ахроматска леќа

Astronomy; General astronomy

Lens (or combination of lenses) that brings different wavelenghts within a ray of light to a single focus, thus overcoming chromatic aberration. It was first successfully made by ...

активна галаксија

Astronomy; General astronomy

1) Active galactic nuclei are very luminous. Their energy output is in two forms: nonthermal continuum and thermal emission line. 2) Any galaxy which is emitting large quantities ...

активна оптика

Astronomy; General astronomy

Controlling the shape of a telescope mirror at a relatively slow rate.

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Astronomy; General astronomy

A unit for measuring acceleration, which is metre per second squared.

зголемување

Astronomy; General astronomy

1) A process by which a star accumulates matter as it moves through a dense cloud of interstellar gas; or, more generally, whereby matter surrounding a star flows toward it (as in ...