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Astronomy
The scientific study of planets, stars, black holes, comets and other celestial bodies that make up outer space.
13Categories 47688Terms
Add a new termContributors in Astronomy
Astronomy > Planetary science
evening star
Astronomy; Planetary science
A planet, not a star, that can be seen in the west just after sunset and it is usually Venus or Mercury.
simple sugar molecule
Astronomy; Planetary science
Also called glycolaldehyde, the simple sugar molecule is composed of carbon, hydrogen and oxygen and plays a key role in the chemical reaction that forms ribonucleic acid (RNA), a ...
Saturn
Astronomy; Planetary science
A planet that is sixth in distance from the Sun and is the second largest planet in the Solar System.
Goddard
Astronomy; Planetary science
American scientist who was one of the first people to proposed that rockets could be used to travel into space.
interplanetary
Astronomy; Planetary science
Existing or happening between planets. A satellite that is launched from the Earth to orbit Mercury travels through interplanetary space.
Jupiter
Astronomy; Planetary science
The planet that is fifth in distance from Sun. It is the largest planet in the Solar System.
Mercury
Astronomy; Planetary science
The planet that is closest to the Sun. Mercury is the second smallest planet in the Solar System and has a rocky surface.
Sub-categories
- Astrometry (117)
- Astronaut (14221)
- Comets (3684)
- Cosmology (251)
- Galaxy (567)
- General astronomy (16061)
- Mars (1797)
- Mathematical astronomy (130)
- Moon (1858)
- Planetary science (7689)
- Planetology (678)
- Radio astronomy (37)
- Solar system (663)