From Macro to Micro

We often look up to the stars and think of the immensity and  vastness of space, but it can make us forget that there is a whole  other universe on the micro level. If we look down, closer and  closer, we might be able to catch a glimpse of the surface,  but if we want to really look at the smallest things in the  universe – we need special equipment (or an easy and fun presentation). Let’s dive down into the smallest building blocks of this universe of ours…

This is our home - Planet Earth

The Earth is a giant ball of water and dirt, laying on top a core of  molten iron. Earth’s circumference is 40,000 kilometers (24,860 mi),  with a surface area of 510,072,000 kilometers (316,944,046 mi).

The largest natural structure on earth - Great Barrier Reef
Located off the eastern coast of Australia, the size of the Great  Barrier Reef is 344,400 sqkm (133,000 sqmi). It is the world’s  largest coral reef, and is visible from space!
The largest natural formation - Grand Canyon
Formed by the Colorado River for millions of years, the Grand  Canyon is 446 km (277 mi) long.
The largest man-made structure – The Great Wall of China
The Chinese started building defensive walls to ward off Mongolian  incursions as early as the 8th-century B.C.E. During the Qin  dynasty reign, Emperor Qin Shi Huang ordered the building of a  wall, connecting all the previously-built fortifications. This  was the earliest incarnation of the Great Wall. The wall was  extended and fortified to the size we know today by the Mind  dynasty in the 14th-century C.E. It is 8,850 km (5,500 mi) long and  is not visible from space.
The highest point on Earth – Mt. Everest
Located in Nepal, at 8,848 meters (29,029 ft.) above sea level,  Mt. Everest is the highest point on Earth.
The tallest man-made building – Burj Khalifa
Standing at 829.8 m (2,722 ft.), the world’s tallest building  is located in Dubai.
Largest tree – Giant Redwood
Endemic to North America, the tallest tree (called “Hyperion”) is a  115.55 meters (379.1 ft.) Giant Sequoia. These trees are also some  of the oldest living creatures in the world, with the oldest one  estimated at over 3,500 years old.
Largest living animal – Blue Whale
The Blue Whale is the largest living animal, with a length of 30  meters (98 ft.). These giants of the deep eat krill (tiny  kind of shrimp-like crustaceans).
Largest land animal – African Elephant
The bull African Bush Elephant can reach a size of 5 meters  (16 ft.) and weigh as much as 6,048 kg (13,330 lb).
Humans
Us, the dominant species on Earth. Humans have an average size  of 1.7 meters (5.5 ft.)
Smallest mammal - Etruscan shrew
These tiny rodents are the smallest mammals, reaching a  size of 4 cm (1.6 in).
Smallest Ant – Pharaoh Ant
Their size is a mere 2 millimeters (0.07 in)
Smallest animal - Stygotantulus stocki
This tiny crustacean is smaller than 0.1 millimeters (0.004 in). Y ou can fit more than 20 of these on the world’s smallest ant…
A single human hair
Seen here at x200 magnification, the width of human hair is just  100 micrometers (0.003 in) and are some of the smallest things  still visible to the naked eye.
Human skin cell
At 35 micrometers (0.001 in), these tiny cells cover every  inch of our body, protecting us from disease and external damage.
Red blood cell
These beauties keep us alive by transporting oxygen to all of  our organs and removing CO2. The size of a human blood cell is  7 micrometers.
Largest Virus - Megavirus
This nasty piece of work is just 440 nanometers in size.  15 of these bad boys can comfortably ride a red  blood cell…
Smallest Virus -Porcine circovirus
This tiny terror’s size is barely 17 nanometers.
Carbon nanotubes
Measuring 1 nanometer in width, these tiny tubes are considered  to be the next “miracle material”, thanks to their durability,  conductivity and strength.
Water molecule
	H2O (Hydrogen Dioxide) – 1 Hydrogen atom bonds with 2 Oxygen atoms, and that is how water is made. Each molecule is 280 picometers, so 3 of those can fit on one carbon nanotube with some room to spare.
Helium atom
	This noble gas fills your birthday balloons, making them lighter than air. It can also raise the pitch of your voice if you inhale it. 1 helium atom is 25 picometers in size.
Neutrons Protons
The center of an atom, called the “Nucleus”, is comprised  of protons and neutrons. Each is 1 femtometer in size.  (There are 1000 femtometers in a picometer)
Quarks
There are 6 kinds of Quarks – Up, Down Strange, Charm, Top,  and Bottom. They are the building blocks of protons and  electrons. They range between the size of 1 attometer  (0.001 femtometer) and 100 yoctometers (0.0001 attometer).  In the image above, you see a proton, comprised of two  “Up” and one “Down” quarks.
Neutrinos These subatomic particles are 1 yoctometer l ong - that’s 0.00000000000000000004 inches). Every  second, 65 billion neutrinos pass through every cubic  centimeter of earth that is in direct sunlight. Neutrinos  cannot be detected directly, and are only found by  using high-energy underground detectors.
Quantum foam
Also known as the “Fabric of Space and Time”. This  hypothesized “foam”, the building block of the universe,  is said to be as small as 0.00000000001 yoctometers.
Want to try an interactive trip from the atomic level to the universal level?