Astronomy
Articles about stars, planets, space and the universe.
Laomedeia (moon)
Laomedeia (Neptune XII): a small outer moon of Neptune
Large Zenith Telescope
Larissa (moon)
Larissa (Neptune moon)
Las Campanas Observatory
Late Heavy Bombardment
Late Heavy Bombardment — lunar cataclysm and its planetary effects
LBV 1806-20
LBV 1806-20: Galactic luminous blue variable candidate and extremely luminous star
Leda (moon)
Leda (moon of Jupiter)
Lenticular galaxy
Lenticular galaxy (S0): intermediate disk galaxies between spirals and ellipticals
Leo (astrology)
Leo (constellation)
Leo (constellation): the Lion of the zodiac
Leo Minor
Leonids
Lepus (constellation)
Libra (astrology)
Libra, the Scales, is the zodiac sign associated with balance, relationships, and aesthetics. It is an air sign ruled by Venus and spans late September to late October in the tropi
Libra (constellation)
Lick Observatory
Ligeia Mare
Ligeia Mare — a large hydrocarbon sea on Titan
Light curve
Light curve (astronomy)
Light year
Light year — the astronomical unit of distance
Lincoln Near-Earth Asteroid Research
Lincoln Near-Earth Asteroid Research (LINEAR)
Local Group
Local Group (galaxy group containing the Milky Way and Andromeda)
Lockman Hole
Lockman Hole (low neutral-hydrogen window in the sky)
Loge (moon)
Longitude of the ascending node
Low Earth orbit
Low Earth orbit (LEO): characteristics, uses, and history
Luhman 16
Luhman 16 — nearby binary brown dwarf system
Luminosity
Luminosity (astronomy): intrinsic energy output of stars and objects
Luminous blue variable
Luminous blue variable (LBV)
Luna
Luna 1
Luna 1 — Soviet first probe to reach the Moon's vicinity and enter solar orbit
Lunar calendar
Lunar eclipse
Lunar mare
Lunar mare (maria): the dark basaltic plains of the Moon
Lunar south pole
Lunar south pole: permanently shadowed craters and polar ice
Lunisolar calendar
Lunokhod 1
Lunokhod 1 — Soviet lunar rover and first successful remote rover on the Moon
Lupus (constellation)
Luyten 726-8
Lynx (constellation)
Lyra
Lysithea (moon)
Lysithea — a small prograde moon of Jupiter
M43
M78
M78 (Messier 78) — a reflection nebula in Orion
Mab (moon)
Mab (moon of Uranus)