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General astronomy
Industry: Astronomy
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General astronomy
light-gathering power
Astronomy; General astronomy
the ability of a telescope to collect more light than the human eye in a given amount of time. It depends on the area of the telescope's objective, such that the larger the collecting area of the ...
lighthouse model
Astronomy; General astronomy
a model describing how pulsars pulsate: the rapidly rotating neutron star produces a narrow beam of light from its magnetic field and if the magnetic pole is aligned with the Earth, the narrow beam ...
light year
Astronomy; General astronomy
distance light travels in one year (9.461 trillion kilometers, over 63,000 A.U.!). Used for interstellar distances.
line of nodes
Astronomy; General astronomy
the intersection of a planet's or the Moon's orbit with the Earth's orbit.
lithosphere
Astronomy; General astronomy
the layer of hard rock that includes the crust and the outermost part of the mantle in a terrestrial planet.
long period comet
Astronomy; General astronomy
a comet with an orbit period of thousands to millions of years long that comes from the Oort cloud.
longitude
Astronomy; General astronomy
used to specify position on the Earth, it is the number of degrees east or west of the 0° line going through Greenwich, England.
