ScienceSource

Isaac Newton. Engraving of the English physicist, mathematician and alchemist Sir Isaac Newton (1642-1727). As a mathematician Newton discovered the binomial theorem and developed differential and integral calculus. As a physicist he devised laws of motion, formulated the general theory of gravitation and wrote on optics. As an astronomer he invented the reflecting telescope. Newton wrote extensively on alchemy, biblical Creation, and biblical prophecies.

Through the Looking-Glass, and What Alice Found There (1871) is a novel by Lewis Carroll, the sequel to Alice's Adventures in Wonderland (1865). Set six months later than the earlier book, Alice again enters a fantastical world, this time by climbing through a mirror into the world that she can see beyond it. Upon leaving the house (where it had been a cold, snowy night), she enters a sunny spring garden where the flowers can speak; they perceive Alice as being a flower that can move about. John Tenniel (February 28, 1820 - February 25, 1914) was an English illustrator, graphic humorist, and political cartoonist prominent in the second half of the 19th century.

Two Golden Retriever Puppies in a Basket Hamper

Through the Looking-Glass, and What Alice Found There (1871) is a novel by Lewis Carroll, the sequel to Alice's Adventures in Wonderland (1865). Set six months later than the earlier book, Alice again enters a fantastical world, this time by climbing through a mirror into the world that she can see beyond it. Upon leaving the house (where it had been a cold, snowy night), she enters a sunny spring garden where the flowers can speak; they perceive Alice as being a flower that can move about. John Tenniel (February 28, 1820 - February 25, 1914) was an English illustrator, graphic humorist, and political cartoonist prominent in the second half of the 19th century.

Cygnus X-1 black hole, illustration. Cygnus X-1 is located near large active regions of star formation in the Milky Way. This illustration depicts what astronomers think is happening within the Cygnus X-1 system. Cygnus X-1 is a so-called stellar-mass black hole, a class of black holes that comes from the collapse of a massive star. The black hole (left) pulls material from a massive, blue companion star (right) toward it. This material forms a disk (red and orange) that rotates around the black hole before falling into it or being redirected away from the black hole in the form of powerful jets. Cygnus X-1 is around 6000 light years from Earth, in the constellation of Cygnus. Image published in 2011.

Isaac Newton. Engraving of the English physicist, mathematician and alchemist Sir Isaac Newton (1642-1727). As a mathematician Newton discovered the binomial theorem and developed differential and integral calculus. As a physicist he devised laws of motion, formulated the general theory of gravitation and wrote on optics. As an astronomer he invented the reflecting telescope. Newton wrote extensively on alchemy, biblical Creation, and biblical prophecies.

A pair of German Short-haired Pointers in a field

Border Terrier puppy dog, by a wagon wheel.

A supermassive black hole is depicted in this artist's concept, surrounded by a swirling disk of material falling onto it. The purplish ball of light above the black hole, a feature called the corona, contains highly energetic particles that generate X-ray light. If you could view the corona with your eyes, it would appear nearly invisible since we can't see its X-ray light. This composite image shows how a shifting corona can create a flare of X-rays around a black hole. The corona gathers inward (left), becoming brighter, before shooting away from the black hole (middle and right). Astronomers don't know why the coronas shift, but they have learned that this process leads to a brightening of X-ray light that can be observed by telescop...

Yorkshire Terrier Leaping and Running the Grass

Vintage photo of a woman kissing her golf ball for luck at the tee. She is holding her golf club.

A cute black, tan and white sheltie dog lies down.

Composite of the moon in the last quarter from the Mount Wilson Observatory

Cute, goofy Chihuahua dog with big ears sitting.

Tenochtitlan was an Aztec city-state located on an island in Lake Texcoco. The city was connected to the mainland by causeways leading to the north, south, and west. The causeways were interrupted by bridges that allowed canoes and other traffic to pass freely. The bridges could be pulled away, if necessary, to defend the city. "Das alte Mexiko und die Erobe

Two Zebras Face Each Other, Black and White Stripes

The Dodo is an extinct flightless bird. Its external appearance is evidenced only by paintings and written accounts from the 17th century.

Reading Blue Mountain and Northern Railroad 425 is a 4-6-2 light "Pacific" type steam locomotive originally built in 1928 by the Baldwin Locomotive Works. Today, it is owned and operated by the Reading & Northern, based out of Port Clinton, Pennsylvania for excursion runs.

French Bulldog, standing in the grass.

Ragdoll cross kitten, 8 weeks old, and grey lop bunny are best friends.

Schnauzer, a purebred dog with a leaf in its paws. Sitting down.

Illustration of the Solar System.

Close-up of orchid flowers, Keukenhof Gardens, Netherlands.

Johannes Kepler (December 27, 1571 - November 15, 1630) was a German mathematician, astronomer and astrologer. A key figure in the 17th century scientific revolution, he is best known for his works Astronomia nova, Harmonices Mundi, and Epitome Astronomiae Copernicanae. These works also provided one of the foundations for Isaac Newton's theory of universal gravitation. Kepler devised the three fundamental laws of planetary motion.

Sandstone detail, Antelope Canyon, Arizona. Abstract Art

Yorkshire Terrier looking through a fence

The Goubet I submarine was a two person, electric submarine built by French inventor Claude Goubet in 1885. Manufactured in Paris, the sub has gone down in history as the first to be electrically powered, with a brace of cutting-edge tech advancing more primitive models. The Goubet I was battery powered, utilized a Siemens electric motor to drive its propeller and power a navigation light, and measured 16.4 feet long. The craft weighed in at just over six tons. It was controlled from a central position, with its two crew positioned back to back, seeing out of the vessel via small glass windows; they could see up, down and to the sides to some extent thanks to prisms. After testing in the River Seine in Paris, however, the Goubet I was ul...

The Dodo is an extinct flightless bird. Its external appearance is evidenced only by paintings and written accounts from the 17th century.

Immanuel Kant (1724 - 1804) was a German philosopher during the Enlightenment and one of the most influential figures in modern Western philosophy. Engraving from The Story of Philosophy, 1926, after a miniature by Veit Hans Schnorr von Carolsfeld, circa 1790s.

A funny cartoon of a group of cats engaged in a bicycle race in Hyde Park, London. Illustration by Louis Wain, 1896.

Immanuel Kant (1724 - 1804) was a German philosopher during the Enlightenment and one of the most influential figures in modern Western philosophy. Engraving from The Story of Philosophy, 1926, after a miniature by Veit Hans Schnorr von Carolsfeld, circa 1790s.

Yorkshire Terrier looking to the right. A dog portrait

Golden Retriever Puppy running on the grass.

Group of Pueblo Indians photographed at the U.S. Capitol, January 15, 1923. This was this first time since the Lincoln administration that the Pueblo Indians sent a delegation to Washington. They appeared before the Senate Lands committee.

A skeleton of a woman with a large fashionable wig. In the mid-to-late 18th century, enormous and elaborate wigs were in vogue for aristocratic women.

A boxer dog jumping over a fence.