Popular Science Education
Apollo 11 Command Module
Apollo 11 was the fifth manned mission in NASA's Project Apollo program and the first human lunar landing mission. On July 20, 1969, Armstrong and Aldrin became the first humans to step on the moon.
Adult cardiopulmonary resuscitation - artificial respiration (medical emergency 3D demonstration animation)
Adult cardiopulmonary resuscitation - chest compressions (medical emergency 3D demonstration animation)
Yeast Asexual Reproduction (Microscopic 3D Schematic)
Human Medical Spinal Model
Swedish King Eric XIV's Parade Armor
This armor may have been manufactured in Alboga, Sweden around 1562 and sent to Antwerp, Belgium for decoration by goldsmith Elisaeus Libaerts. This armor was worn by King Eric XIV on October 2, 1564, when he returned to Stockholm with his military entourage after launching a military operation in Blekinge, southern Sweden.
Rabbit skeleton
Simple seismic recorder (3D demonstration animation)
Medieval flat star chart
The star chart is an ancient astronomical instrument, which can be said to be a handheld model of the universe. Its various functions also make it a sophisticated inclinometer and an analog computing device capable of solving several problems in astronomy. In its simplest form, it is a metal disk with patterns of wires, cuts, and perforations, allowing users to accurately calculate the position of celestial bodies. Astronomers throughout history have used it to measure the height of celestial bodies on the horizon, both during the day and at night; It can be used to identify stars or planets, determine the local latitude at a given local time, measure or conduct triangulation.
Abel Pinsdorf's Footprints
This is the name of a fossil footprint, a footprint fossil left by ancient animals.
The seal of the Diocese of John and Paul
The seal of the Diocese of John and Paul bears the inscription of Lake Eger and Krems on the banks of the Danube River. The 17th century seal depicts the martyrs John and Paul, both wearing armor and helmets, one holding a sword and the other holding a palm branch.
Soldiers' Parade Relief at Deir ez Zor Bari Temple
Western European bison skeleton
The Western bison is a member of the family Oxidae in the order Artiodactyla. The body length is 220-300 centimeters, the tail length is 40-60 centimeters, and the weight is 450-1000 kilograms. Both female and male animals have horns, which are slender and elongated. The horns first turn inward, then turn upward, and then bend forward. The tips of the horns then bend inward. Female animals have shorter and thinner horns. Small head, exposed snout, small eyes, and short ears. The neck is relatively short, with obvious hanging hair from the lower cheeks to the chest.
Fossil of ray finned fish
Ray finned fish, a major evolutionary branch of bony fish, is characterized by its fins being fan-shaped membranes supported by spoke shaped bony/keratinous spines, which differ from the paddle shaped fleshy fins supported by multi jointed appendicular bones in meat finned fish or by cartilage columns in cartilaginous fish.
Silver Tapping of Karshapana during the Peacock Dynasty
Karshapana is a silver currency in ancient India, which first appeared around the 6th century BC. They are usually issued by merchants and bankers, not by the state. These coins usually have one to five or six symbols, initially only stamped on the front of the coin. During the Peacock Dynasty (approximately 322-185 BC), the Kalshapana coin was widely used. The weight of these coins is usually around 3.4 grams. Coins usually have symbols such as the sun on them. These silver struck coins ceased to be minted in the 2nd century BC and continued to have a wide-ranging impact on trade and economy for the next five centuries.
Transverse section of human kidney
The Victory of Crassus Greek Coloane
The Victory of Krates Greek Stoa is an ancient Greek architectural relic. This colonnade is located in the Holy Land of Delphi, near the Temple of Apollo. It was built between 478 BC and 470 BC to commemorate the Athenians' victory in the Persian Wars.
Polarity of Water (Microscopic 3D Schematic)
Water is a polar compound, and due to the strong electronegativity of oxygen atoms, electron pairs tend to lean towards the oxygen side, resulting in the accumulation of negative charges around oxygen atoms and positive charges around hydrogen atoms.
Limestone limestone
Limestone, also known as calcareous limestone, is a sedimentary rock formed by the deposition of calcium carbonate. It is usually formed in hot springs, rivers, or lakes and is known for its porous and lightweight properties. The formation process of limestone involves mineral rich water flowing over the surface, and as the water evaporates, calcium carbonate gradually deposits, forming a layered rock structure. It is currently housed in the UAIC Museum of Minerals and Petrography.
Structure of flagella (microscopic 3D schematic)
The Monument of Intef
The Intef Stele is a stone tablet from the Middle Kingdom period of ancient Egypt, dating back to around 2000-1988 BC. It records the life and achievements of Intef. The top of the stone tablet bears the name of Nebhepetre Mentuhotep II, the founder of the Middle Kingdom. Intef claimed to be his servant and served as the fortress supervisor.
Sun, Shield UY and Stevenson 2-18 (3D model with proportional comparison)
UY Scuti, also known as UY Scuti, is a red supergiant located in the constellation of Scuti. The radius is approximately 1708 ± 192 times that of the Sun. Despite its large volume, its mass is only about 7-10 times that of the Sun,. The brightness of UY in the constellation of Shield is 340000 times that of the Sun, making it one of the most luminous stars. Stevenson 2-18 is a red supergiant located in the direction of the constellation of Shield. It is about 20000 light-years away from Earth and is located in the line of sight of the Stephenson open star cluster. The diameter of this star is about 2158 times that of the Sun, making it one of the largest known stars in terms of volume.
Tutatis asteroid
Toutatis, asteroid number 4179, is a slender rocky asteroid and slow-moving body classified as a potentially hazardous near Earth asteroid in the Apollo and Alinda groups, with a diameter of approximately 2.5 kilometers. In 1989, French astronomer Christian Pollas discovered this asteroid in Koussors, named after Toutatis in Celtic mythology. Tutotis approached Earth again in 2016, but there is no risk of impact before 2069.
Bismuth ore
Bismuth is a chemical element with the chemical symbol Bi, atomic number 83, and atomic weight 208.98040 u. Bismuth is a poor metal with chemical properties similar to arsenic and antimony, both belonging to the nitrogen group. Bismuth can be found in nature, and its sulfides and oxides are important commercial ores. The density of pure bismuth is 86% of that of pure lead. When it is first produced, it is a silver white brittle metal, but its surface turns pink after oxidation. Bismuth is a natural diamagnetic metal and one of the elements with the lowest thermal conductivity among metals.
The Theban stone tablet from the 3rd century BC
A moving solar system model (3D demonstration animation)
Saber toothed tiger skeleton
The saber toothed tiger is a carnivorous mammal belonging to the genus saber toothed tiger in the order Felidae. The saber toothed tiger was once widely distributed on the continents of Asia, Europe, and America. It appeared in the Oligocene 35 million years ago and became extinct in the Pleistocene one million years ago. Their living period was during the Quaternary glacial period, when herbivores were slow-moving and easily hunted. But the ice age has ended, and cold resistant large herbivores cannot adapt to climate change and migrate northward, dying due to insufficient food. The saber toothed tiger lost its food source, did not have an advantage in hunting, and even became a prey for humans. In the end, it could only go extinct with the extinction of large thick skinned animals.
The painted reliefs of the Bakhrihat Shepsut Temple
The pictographic characters carved by colored painting have repeated lintel reliefs with the words neb ankh, djed, and was written on them; All life, stability, and governance. The relief is located in the northwest corner of the column hall of the Hassel Church in the Hadbahrihat Shepsut Temple in Egypt.
Neural cell bundle (microscopic 3D schematic diagram)
A nerve tract is a bundle like structure formed by the aggregation of nerve fibers with similar functions and starting and ending points in the central nervous system, also known as a conduction tract.
Juvenile Tyrannosaurus Rex skull
Tyrannosaurus rex, also known as Tyrannosaurus rex, is a type of theropod dinosaur and the most representative large theropod dinosaur. Tyrannosaurus rex once roamed an island continent called Laramidia (now located on the eastern foothills of the Rocky Mountains in western North America). The distribution range of tyrannosaurs is wider than other members of the tyrannosauridae family. Its fossils were discovered in various strata of the Late Cretaceous Maastrichtian stage (approximately 68 to 66 million years ago). Tyrannosaurus is the last known member of the Tyrannosauridae family before the Cretaceous Paleogene extinction event, and is also one of the latest non avian dinosaurs to go extinct. Tyrannosaurus rex is currently the heaviest known carnivorous dinosaur.
Canglong (3D Restoration Animation)
Canglong is a marine reptile belonging to the family Canglong in the order Scales. Its largest individual can reach about 20 meters, with a long barrel shaped body, a strong tail, and a snake like appearance. It has high fluid dynamics; Teeth are curved, sharp, and conical in shape; The forelimbs of Canglong have five toes, while the hind limbs have four toes. The limbs have evolved into fin like limbs, with the forelimbs being larger than the hind limbs.
Giant lemur skeleton
The weight of the giant lemur is about 50 kilograms, making it one of the largest lemurs in history. It is a slow-moving, bulky creature with a body posture similar to modern koalas. These animals used to inhabit the island of Madagascar. 2300 years ago, humans arrived on the island, causing the species to rapidly decline and eventually become extinct approximately 500 years ago. This skeleton is housed in the Vienna Museum of Natural History.
Mars captured by the Insight mission
Horus Statue
This stone amulet of the Holy Falcon of Horus in ancient Egypt from the 21st to the 16th century BC is very common. The eyes are made of semi precious stones, dark blue lapis lazuli, and black obsidian.
Fossil of true palm fin fish
The Eusthenopteron lived in the Devonian period 400 million years ago. It is a freshwater fish that feeds on aquatic animals.
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