Formation of the Moon
How Uranus got its Tilt
Birth of Galaxies
Expansion of the Universe, illustration
Galaxy collision and merger, illustration
Birth and Death of the Solar System
Evolution of the Universe, artwork
Solar Life Cycle
Caesarean section, artwork
Dwarf Planets and Moon Compared
Lithosphere, artwork
Planets as one, illustration
Solar Granulation
Diagram of comet reservoirs
Scale of Solar System Bodies
Illustration of the Inverse Square Law
Caesarean section womb incisions, artwork
In Ptolemy's geocentric model of the universe, the Sun, Moon, and each planet orbit a stationary Earth.
Colliding universes, illustration
Earth and Moon space-time warp, artwork
Pluto and the Kuiper belt
Dwarf planets and moons, illustration
Solar system planets, illustratoin
Artwork of the orbits of the Solar System
Solar System Distances to Scale
Interior, Surface and Atmosphere of Sun
Evolution of the Big Dipper asterism
Dwarf Planets and Earth Compared
Dwarf Planets Compared
Cutaway of a red dwarf star
Asteroid distribution
Universe creation by brane collision
Interior of Sun
Asteroseismology
Spiral galaxy, schematic illustration
Comparison of the Sun and Stephenson 2-18, illustration
Comparison of Sun and Stephenson 2-18, illustration
Life-cycle of the Sun, artwork
Solar system astronomy, 19th century
Moon interior
Why the sky is blue, illustration
Acupuncture points, artwork
Choking first aid, artwork
Emphysema, artwork
Hearing aids, artwork
Mid-stream urine sample, artwork
Venus's middle and lower atmosphere
Body shapes, artwork
Possible Fates of Universe
Theoretical depiction of the movement of tectonic plates across Earth's surface.
Early Earth's star cluster, illustration
Image formation in a microscope, according to the Abbe theory.
Relationships of endocrine glands, from the pituitary-hypothalamus system to the vertebrate endocrine glands and their hormones.
Illustration of the human bone structure
Average exchange of energy between the surface, atmosphere, and space, as percentages of incident solar radiation.
General patterns of atmospheric circulation over an idealized Earth with a uniform surface and the actual Earth.
The artery wall and the ultrastructure of the smooth muscle cells within it.
Diagram of a mammalian muscle spindle.
Pulsar star, illustration
Cross section of a crystal microphone.
Blood oxygen meter, artwork
Lorentz-Fitzgerald contraction, artwork
Flat foot comparison, artwork
Ganglion cyst, artwork
Electromechanical machine, 18th century
Imagers and copiers, 18th century
Perspective diagrams, 19th century
Pluto-Charon mutual eclipses
Near-Earth objects
Uranus's orbit
Astronomical mathematics, 19th century
Sun and terrestrial planets, illustration
Dwarf Planets and Moons Compared
Diagram of Great American Eclipse, 2017
America compared with Valles Marineris, illustration
Phylogeny based on differences in the protein sequence of cytochrome c in organisms ranging from Neurospora mold to humans.
Solar System Structure Out to Oort Cloud
Earth-Theia Impact
Washing a baby, artwork
The mechanical components of a compound microscope.
A cross section of Earth's outer layers, from the crust through the lower mantle.
Spring balance
Nuclear blast and radiation effects
Boyle's experiments on air, 1669 artwork
Dental hygiene, artwork
Lumbar puncture, artwork
Stomach cancer, artwork
Meissner's corpuscle, artwork
Elimination of antibiotic from the body
Human musculature, artwork
Human spine, artwork
Hip joint, artwork
Acne, artwork
Acromegaly, artwork
Carpal tunnel syndrome, artwork
Cradle cap, artwork
Diabetes complications, artwork
Sugary drinks and tablets, artwork
Human ear, artwork
Uterine fibroids, artwork
Food poisoning bacteria, artwork
Foot fractures, artwork
Types of fracture, artwork
Vasoconstriction in the cold, artwork
Heart disease, artwork
Ingrowing toenail, artwork
Applying eye drops, artwork
Polycystic kidneys
Kidney stone, artwork
Artificial respiration, artwork
Healthy mouth, artwork
Undescended testes, artwork
Intramuscular deltoid injection, artwork
Dorsogluteal injection, artwork
Dorsogluteal injection site, artwork
Chladni's acoustic figures, 19th century
Electric circuit research, 19th century
Chevreul illusion
Colour contrast diagrams
Chevreul's chromatic diagram
Basking shark
Eel life-cycle, artwork
Diagram depicting the process of atoll formation. Atolls are formed from the remnant parts of sinking volcanic islands.
The process of cell division by mitosis.
The Michelson interferometer measures the effect on the speed of light of the motion of the ether through which light travels.
Three types of natural selection, showing the effects of each on the distribution of phenotypes within a population.
Light waves matching the orientation of the molecules of a polarizing filter are absorbed, reducing the intensity of the light.
The diffusion of water across a semipermeable membrane.
Diagram of the Asteroid Belt
The components of a transmission electron microscope (TEM).
Approaching the speed of light, an object appears shorter, with a longer time interval, relative to its intervals when at rest.
Male Down's syndrome karyotype, artwork
Dupuytren's contracture,artwork
Situs inversus, artwork
Brain and spinal cord, artwork
Eye anatomy,artwork
Narrowed blood vessel, artwork
Anatomical terms, artwork
Anatomical planes of the body, artwork
Male anatomy, artwork
Healthy female figure, artwork
Female reproductive system, artwork
Cardiovascular system, artwork
Shoulder bones, artwork
Head lice, artwork
The weather model of meteorologist Edward Lorenz.
Automotive-type lead-acid battery, a storage battery that holds its charge for a long time and can be recharged.
Evolutionary history of the globin genes. The dots indicate the duplication of ancestral genes, giving rise to new gene lineage.
The steps involved in the engineering of a recombinant DNA molecule.
Artwork of early Earth-Moon system
Diagram of a wave system depicting typical divergence and convergence distributions for non-tilting and tilting systems.
Jupiter's atmosphere
Hand washing, artwork
Collisions in a protoplanetary disc
Antidiuretic hormone, illustration
Atomic structure, illustration
Blood alcohol concentration
The age of Earth's oceanic crust, as measured in millions of years.
Speedometer
Male and female sexual maturation