Illustration of a square inscribed in a closed concave geometric figure with 24 sides in the shape of a 12-point star. The two figures are concentric.

Square Inscribed in a 12-Point Star

Illustration of a square inscribed in a closed concave geometric figure with 24 sides in the shape of…

Illustration of an equilateral triangle inscribed in a closed concave geometric figure with 24 sides in the shape of a 12-point star. The two figures are concentric.

Triangle Inscribed In A 12-Point Star

Illustration of an equilateral triangle inscribed in a closed concave geometric figure with 24 sides…

Star with 5 points with lines of symmetry.

Star, 5-Point

Star with 5 points with lines of symmetry.

Star with 6 points with lines of symmetry.

Star, 6-Point

Star with 6 points with lines of symmetry.

"Suppose a to be a stationary celestial object, then as the Earth makes her annual revolution around the Sun S, this object at one time will appear among the stars at e, but six months after, when the Earth comes to the opposite point in her orbit, the same object will be seen at c, the space from c to e being the annual parallax of the object a. But the distances of the stars are so great that the diameter of the Earth's orbit, or 190,000,000 of miles make no difference in their apparent places. Were the fixed stars within 19 trillions of miles, their distance could be told by their parallaxes." —Comstock, 1850

Annual Parallax

"Suppose a to be a stationary celestial object, then as the Earth makes her annual revolution around…

"A zodiacal constellation, supposed to represnt a man standing with his left hand extended upward, and his right pouring out a vase a stream of water, which flows into the mouth of a southern fish."-Whitney, 1902

Aquarius

"A zodiacal constellation, supposed to represnt a man standing with his left hand extended upward, and…

"A northern constellation situated in the Milky Way, nearly south of Lyra, and containing the bright star Altair."-Whitney, 1902

Aquila

"A northern constellation situated in the Milky Way, nearly south of Lyra, and containing the bright…

"Tergal skeleton of Asterius rubens. a, connecting pieces; b, spinebearing plates." — Encyclopedia Britannica, 1893

Asterius Rubens

"Tergal skeleton of Asterius rubens. a, connecting pieces; b, spinebearing plates." — Encyclopedia…

"Asterias rubens. a, 4-ranked pedicelis; b, end of pedicel magnified." — Encyclopedia Britannica, 1893

Asterius Rubens

"Asterias rubens. a, 4-ranked pedicelis; b, end of pedicel magnified." — Encyclopedia Britannica,…

"Antambulacral surface of Asterias rubens. a, madreporite; a', the same magnified; b, anus." — Encyclopedia Britannica, 1893

Asterius Rubens

"Antambulacral surface of Asterias rubens. a, madreporite; a', the same magnified; b, anus." —…

"The rays are sometimes very short, or altogether wanting, the body having the form of a pentagonal disk." — Encyclopedia Britannica, 1893

Astrogonium Phrygianum

"The rays are sometimes very short, or altogether wanting, the body having the form of a pentagonal…

"Originally used for any instrument used for observing stars; afterwards used for an instrument for measurement of altitute; replaced, in modern times, by the quadrant." — Williams, 1889

Astrolabe

"Originally used for any instrument used for observing stars; afterwards used for an instrument for…

"Section of ray of Astropecten aurantiacus. a, vertebral ossicles; b, adambulacral ossicles; c, d, marginal ossicles; e, paxillae." — Encyclopedia Britannica, 1893

Astropectenn Aurantiacus

"Section of ray of Astropecten aurantiacus. a, vertebral ossicles; b, adambulacral ossicles; c, d, marginal…

An ancient southern constellation, the Southern Fish.

Piscis Austrinus

An ancient southern constellation, the Southern Fish.

"Star of the Order of the Black Eagle." — Chambers' Encyclopedia, 1875

Black Eagle

"Star of the Order of the Black Eagle." — Chambers' Encyclopedia, 1875

Among the several species of Brittle-Star found in the British seas is the Common Brittle-Star, <em>Ophicoma rosula</em>, which displays the most varied hues, arranged in beautiful patterns." &mdash; Goodrich, 1859

Common brittle-star

Among the several species of Brittle-Star found in the British seas is the Common Brittle-Star, Ophicoma

Constellation: Cassiopeia

Cassiopeia

Constellation: Cassiopeia

An illustration of a young girl wishing upon a star through a window with large drapes

Child Wishing on a Star Through Window

An illustration of a young girl wishing upon a star through a window with large drapes

Illustration of a 6-point star (convex dodecagon) circumscribed about a circle. This can also be described as a circle inscribed in a 6-point star, or convex dodecagon.

Star Circumscribed About A Circle

Illustration of a 6-point star (convex dodecagon) circumscribed about a circle. This can also be described…

Illustration of an 8-point star (convex polygon) circumscribed about a circle. This can also be described as a circle inscribed in an 8-point star, or convex polygon.

Star Circumscribed About A Circle

Illustration of an 8-point star (convex polygon) circumscribed about a circle. This can also be described…

Illustration of a 5-point star inscribed in a circle. This can also be described as a circle circumscribed about a 5-point star.

Star Inscribed In A Circle

Illustration of a 5-point star inscribed in a circle. This can also be described as a circle circumscribed…

Illustration of a 6-point star created by two equilateral triangles (often described as the Star of David) inscribed in a circle. This can also be described as a circle circumscribed about a 6-point star, or two triangles.

Star Inscribed In A Circle

Illustration of a 6-point star created by two equilateral triangles (often described as the Star of…

Illustration of a 6-point star (convex dodecagon) inscribed in a circle. This can also be described as a circle circumscribed about a 6-point star, or convex dodecagon.

Star Inscribed In A Circle

Illustration of a 6-point star (convex dodecagon) inscribed in a circle. This can also be described…

Illustration of an 8-point star, created by two squares at 45&deg; rotations, inscribed in a circle. This can also be described as a circle circumscribed about an 8-point star, or two squares.

Star Inscribed In A Circle

Illustration of an 8-point star, created by two squares at 45° rotations, inscribed in a circle.…

Illustration of an 8-point star, or convex polygon, inscribed in a circle. This can also be described as a circle circumscribed about an 8-point star.

Star Inscribed In A Circle

Illustration of an 8-point star, or convex polygon, inscribed in a circle. This can also be described…

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward the center of the circle. (The arcs are inverted.) The design is then repeated and rotated 45&deg; to create the star-like illustration in scribed in the circle.

Reflected Arcs Of 2 Circles In A Circle

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward…

A design created by dividing a circle into 4 equal arcs and reflecting each arc toward the center of the circle. (The arcs are inverted.) The design is then repeated and rotated 45&deg; to create the star-like illustration.

Reflected Arcs Of 2 Circles

A design created by dividing a circle into 4 equal arcs and reflecting each arc toward the center of…

A design created by dividing a circle into 4 equal arcs and reflecting each arc toward the center of the circle. (The arcs are inverted.) The design is then repeated and rotated 45&deg; and the overlapping curves are removed to create the star-like illustration.

Reflected Arcs Of 2 Circles

A design created by dividing a circle into 4 equal arcs and reflecting each arc toward the center of…

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward the center of the circle. (The arcs are inverted.) The design is then repeated (a total of four times) and rotated 22.5&deg; to create the star-like illustration in scribed in the circle.

Reflected Arcs Of 4 Circles In A Circle

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward…

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward the center of the circle. (The arcs are inverted.) The design is then repeated (a total of four times) and rotated 22.5&deg; to create the star-like illustration.

Reflected Arcs Of 4 Circles In A Circle

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward…

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward the center of the circle. (The arcs are inverted.) The design is then repeated (a total of eight times) and rotated 11.25&deg; to create the star-like illustration in scribed in the circle.

Reflected Arcs Of 8 Circles In A Circle

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward…

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward the center of the circle. (The arcs are inverted.) The design is then repeated (a total of eight times) and rotated 11.25&deg; to create the star-like illustration.

Reflected Arcs Of 8 Circles

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward…

Illustration of a 6-point star (convex dodecagon) inscribed in a large circle and circumscribed about a smaller circle.

Star Inscribed And Circumscribed About Circles

Illustration of a 6-point star (convex dodecagon) inscribed in a large circle and circumscribed about…

Illustration of an 8-point star (convex polygon) inscribed in a large circle and circumscribed about a smaller circle.

Star Inscribed And Circumscribed About Circles

Illustration of an 8-point star (convex polygon) inscribed in a large circle and circumscribed about…

"Since A is producing light and larger than object B, the shadow of B continuously shrinks to a single point at C." &mdash;Quackenbos 1859

Diminish Shadow

"Since A is producing light and larger than object B, the shadow of B continuously shrinks to a single…

The constellation, with the north star also shown.

The Dipper

The constellation, with the north star also shown.

"If we suppose a spectator placed at G, in the Earth's center, he would see the moon E, among the stars at I, whereas without changing the position of the moon, if that body is seen from A, on the surface of the Earth, it would appear among the stars at K. Now I is the true and K the apparent place of the moon, the space between them, being the Moon's parallax." &mdash;Comstock, 1850

Diurnal Parallax

"If we suppose a spectator placed at G, in the Earth's center, he would see the moon E, among the stars…

Ornamentation of a semi-regular pointed star. Arabic, 16th century.

Doodad

Ornamentation of a semi-regular pointed star. Arabic, 16th century.

A four-pointed doodad

Doodad

A four-pointed doodad

"Gules, an estoile argent," or a silver star on a red background. -Whitney, 1911

Estoile

"Gules, an estoile argent," or a silver star on a red background. -Whitney, 1911

"ETOILE. The French word for a star. It differs from the mullet in the number of points, and four of the points being rayant." -Hall, 1862

Etoile

"ETOILE. The French word for a star. It differs from the mullet in the number of points, and four of…

"The body is flattened and covered with several cacareous plates; the lower, or entral surface, bears the mouth and anus; and the ten slender rays are often branched to such an extent as to appear very numerous." &mdash; Goodrich, 1859

Rosy feather-star

"The body is flattened and covered with several cacareous plates; the lower, or entral surface, bears…

"Palaechinus sphaericus, Scouler; Carbouiferous, Ireland." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Palaechinus sphaericus, Scouler; Carbouiferous, Ireland." — Encyclopedia Britannica, 1893

"Archaeocidaris Urii, Flem (spine and intermediate plate); Carboniferous, Ireland." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Archaeocidaris Urii, Flem (spine and intermediate plate); Carboniferous, Ireland." — Encyclopedia…

"Cidaris glandifera, Goldf (spine); Jura, Mount Carmel." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Cidaris glandifera, Goldf (spine); Jura, Mount Carmel." — Encyclopedia Britannica, 1893

"Hemicidaris intermedia, Flem.; Corallian, Calne." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Hemicidaris intermedia, Flem.; Corallian, Calne." — Encyclopedia Britannica, 1893

"Salenia petalifers, Desm., U Greensand, Wilts." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Salenia petalifers, Desm., U Greensand, Wilts." — Encyclopedia Britannica, 1893

"Dysaster ringens, Ag., Inferior Oolite, Dorset." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Dysaster ringens, Ag., Inferior Oolite, Dorset." — Encyclopedia Britannica, 1893

"Hemipneustes Greenovii, Forbes, U. Greensand, Blackdown" &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Hemipneustes Greenovii, Forbes, U. Greensand, Blackdown" — Encyclopedia Britannica, 1893

"Catopygus carinatus Goldf., U. Greensand, Wilts." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Catopygus carinatus Goldf., U. Greensand, Wilts." — Encyclopedia Britannica, 1893

"Cidaris florigemma, with spine, a, and single ambulacral plate, magnified, b, (after Wright; Coral Rag." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Cidaris florigemma, with spine, a, and single ambulacral plate, magnified, b, (after Wright; Coral…

"Ananchytes ovatus, Lam.; U. Chalk, Europe." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Ananchytes ovatus, Lam.; U. Chalk, Europe." — Encyclopedia Britannica, 1893

"Pygaster semisulcatus, Ph.; Inf. Oolite, Cheltenham." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Pygaster semisulcatus, Ph.; Inf. Oolite, Cheltenham." — Encyclopedia Britannica, 1893

"Galerites albogalerus, Lam.; U. Chalk, Kent." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Galerites albogalerus, Lam.; U. Chalk, Kent." — Encyclopedia Britannica, 1893

"Scutella subrotunda; Miocene, Malta." &mdash; Encyclopedia Britannica, 1893

Fossil Echinidea

"Scutella subrotunda; Miocene, Malta." — Encyclopedia Britannica, 1893

The interrupted fret band is a pattern that has a star or rosette in the middle of the band that interrupts the repetitive pattern.

Interrupted Fret Band

The interrupted fret band is a pattern that has a star or rosette in the middle of the band that interrupts…

The missing fret band is a pattern that has a star or rosette in the middle of the band that interrupts the repetitive pattern.

Missing Fret Band

The missing fret band is a pattern that has a star or rosette in the middle of the band that interrupts…

The Twin Design fret band is a pattern that has a star, rosette or design that is in the middle of the band that interrupts the repetitive pattern.

Twin Design Fret Band

The Twin Design fret band is a pattern that has a star, rosette or design that is in the middle of the…

"The Star is the badge, first ordered by Charles I. The rays are of silver or diamonds. The star is worn on the left breast."&mdash;Aveling, 1891

Star of the Order of the Garter

"The Star is the badge, first ordered by Charles I. The rays are of silver or diamonds. The star is…

Constellation: Hercules

Hercules

Constellation: Hercules