Tag - science

Mars Science Laboratory

The Mars Science Laboratory (MSL) is a National Aeronautics and Space Administration (NASA) mission with the aim to land and operate a rover named Curiosity on the surface of Mars. Currently in transit to Mars, it was launched November 26, 2011, at 10:02 E...

Magnetic Levitation

Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic pressure is used to counteract the effects of the gravitational and any other accelerations. Earnshaw's the...

VY Canis Majoris

VY Canis Majoris (VY CMa) is currently the largest known star and also one of the most luminous. Located in the constellation Canis Major, it is a red hypergiant, between 1800 and 2100 solar radii, 8.4–9.8 astronomical units in radius, 3.063 billion km or ...

Swift Gamma-Ray Burst Mission

The Swift Gamma-Ray Burst Mission consists of a robotic spacecraft called Swift, which was launched into orbit on 20 November 2004, 17:16:00 UTC on a Delta II 7320-10C expendable launch vehicle. Swift is managed by the NASA Goddard Space Flight Center, and...

Bovine somatotropin

Bovine somatotropin (abbreviated bST and BST), or BGH, is a chain of amino acids produced by the cow's pituitary gland. Like other hormones, it is produced in small quantities and is used in regulating metabolic processes. Since 1994 it has been possible t...

Neodymium Magnet

A neodymium magnet, the most widely-used type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure. Developed in 1982 by General Motors and Sumitomo Special Metal...

Magic Sand

Magic sand, Mars Sand, Space Sand,Sqand or Aqua Sand is a toy made from sand coated with a hydrophobic compound. The presence of this hydrophobic compound causes the grains of sand to adhere to one another and form cylinders (to minimize surface area) when...

Megalodon

The megalodon is an extinct species of shark that lived roughly about 25 to 1.5 million years ago, during the Cenozoic Era (late Oligocene to early Pleistocene). The taxonomic assignment of C. megalodon has been debated for nearly a century, and is still u...

Starfish Prime

Starfish Prime was a high-altitude nuclear test conducted by the United States of America on July 9, 1962, a joint effort of the Atomic Energy Commission (AEC) and the Defense Atomic Support Agency (which became the Defense Nuclear Agency in 1971). The Tho...

Derweze

Derweze is a Turkmenistan village of about 350 inhabitants, located in the middle of the Karakum desert, about 260 km north from Ashgabat. Darvaza inhabitants are mostly Turkmen of the Teke tribe, preserving a half-nomadic lifestyle. The Derweze area is r...

Reflex Sight

Reflex sights are optical or computing sights that reflect a reticle image (or images) onto a combining glass for superimposition on the target. Reflex sights are most commonly configured as non-magnifying firearm sights (such as the M68 red dot sight), bu...

Tacome Narrows Bridge (1940)

The 1940 Tacoma Narrows Bridge was the first incarnation of the Tacoma Narrows Bridge, a suspension bridge in the U.S. state of Washington that spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic o...

IBM Roadrunner Supercomputer

Roadrunner is a supercomputer built by IBM at the Los Alamos National Laboratory in New Mexico, USA. Currently the world's fastest computer, the US$133-million Roadrunner is designed for a peak performance of 1.7 petaflops, achieving 1.026 on May 25, 2008,...

Body Farm

A body farm is a research facility where human decomposition can be studied in a variety of settings. The aim is to gain a better understanding of the decomposition process, permitting the development of techniques for extracting information (such as the t...

Hubble Ultra Deep Field

The Hubble Ultra Deep Field, or HUDF, is an image of a small region of space in the constellation Fornax, composited from Hubble Space Telescope data accumulated over a period from September 24, 2003 through to January 16, 2004. It is the deepest image of ...

Pykrete

Pykrete is a composite material made of approximately 14 percent sawdust or some other form of wood pulp and 86 percent ice by weight. Its use was proposed during World War II by Geoffrey Pyke to the British Royal Navy as a candidate material for making a ...

Water Rocket

A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel—the engine of the rocket—is usually a used plastic soft drink bottle. The water is forced out by a pressurized gas, typically compressed air. The term "aquajet" ...

GE Evolution Series

The Evolution Series is a line of diesel locomotives built by GE Transportation Systems, designed to meet the U.S. EPA's Tier 2 locomotive emissions standards that took effect in 2005. The first pre-production units were built in 2003. Evolution Series loc...

Project Excelsior

Project Excelsior was a series of high-altitude parachute jumps made by Colonel (then Captain) Joseph Kittinger of the United States Air Force in 1959 and 1960 to test the Beaupre multi-stage parachute system. In one of these jumps Kittinger set world reco...

Glow Stick

A glow stick is a single-use translucent plastic tube containing isolated substances which when combined make light through a chemical reaction-induced chemiluminescence which does not require an electrical power source. Millions of glow sticks are sold an...

1993 Storm Of The Century

The Storm of the Century, also known as the ’93 Superstorm, No-Name Hurricane, the White Hurricane, or the (Great) Blizzard of 1993, was a large cyclonic storm that occurred on March 12–March 13, 1993, on the East Coast of North America. It is unique for i...

Rip Current

A rip current is a strong channel of water flowing away from the shoreline, typically through the surf line, and can occur on any shore that has breaking waves. The water flows seaward from near the shore. Typical flow is at 0.5 meters per second (1–2 feet...

Trebuchet

A trebuchet is a siege engine that was employed in the Middle Ages either to smash masonry walls or to throw projectiles over them. It is sometimes called a "counterweight trebuchet" or "counterpoise trebuchet" in order to distinguish it from an earlier w...

Magma

Magma is molten rock that is found beneath the surface of the Earth, and may also exist on other terrestrial planets. Besides molten rock, magma may also contain suspended crystals and gas bubbles. Magma often collects in a magma chamber inside a volcano. ...

Antipredator Adaption

Antipredator adaptations are evolutionary adaptations developed over time, which assist prey organisms in their constant struggle against their predators. There are several ways antipredator adaptations can be classified, such as behavioral or non-behavior...

Fluorescence

Fluorescence is the emission of visible light by a substance that has absorbed light of a different wavelength. In most cases, absorption of light of a smaller wavelength induces emission of light with a larger wavelength. A smaller wavelength emission is...

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