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Aster/Astro & Stell
As we go through these slides, try to think what
the root words aster and stell might mean.
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astronomy
(noun)
the science which studies stars, planets, comets,
and galaxies and their movements
Renaissance era astronomer, Nicolaus Copernicus,
proposed a model of the solar system with the sun as its
center.
astrology
(noun) the study of the supposed influences of the stars on
human affairs by their positions in relation to each other
Believers in astrology claim there is a connection between
celestial bodies and one’s personal life.
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asteroid
(noun)
a star-like body in space; a small planet
one of thousands of small planets between Mars and Jupiter
with diameters from a fraction of a kilometer to nearly
800 kilometers;
The asteroid belt lies between the planets Mars and
Jupiter.
aster
(noun)
a fall flower shaped like a star
The aster is a popular garden flower because of its colorful
star-shaped blooms.
asterisk
(noun)
a star used in printing to refer to a margin note
According to The World Factbook, the population of the
United States is 303,824,640*.
*July 2008 est.
An asterisk is sometimes used to indicate a footnote,
especially when there is only one on the page.
disaster
(noun) sudden great misfortune, especially something
(as a flood or tornado) that happens suddenly and
causes much suffering or loss
[Etymology: from early French desastre and early Italian
disastro, both meaning “an unfavorable position of a star”]
Hurricane Katrina was one of our country’s worst natural
disasters, and the costliest in the history of the United
States.
astrophysics
(noun)
astronomy and physics combined to understand the
heavens (or the stars)
a branch of astronomy dealing with the physical
and chemical measurements of the heavenly bodies
Astrophysicists study the physical properties (luminosity,
density, temperature, and chemical make-up) of galaxies,
stars, and planets.
stellate
(adjective)
star-shaped: shaped like a star
-A starfish, some flowers, and some crystals have a
stellate shape.
-The stellate form appears often in
nature, even at the cellular level.
constellation
(noun)
a group of stars forming a shape:
a group of stars visible from Earth that forms a distinctive
pattern and has a name, often derived from Greek
mythology, linked to its shape.
Early astrologers “connected the dots” between stars and
named these constellations after mythological figures.
stellar
(adjective)
like a star; most important;
principal; leading; outstanding
Come and see the stellar performance of students from the
ELHS theater program in The World Goes ‘Round.
What do you think the roots
stell, aster, and astro mean?
(Click when ready.)