The molecular formula C22H30O2 (molar mass: 326.48 g/mol, exact mass: 326.2246 u) may refer to:
 | This set index page lists chemical structure articles associated with the same molecular formula. If an internal link led you here, you may wish to change the link to point directly to the intended article. |
The PaleozoicEra is the earliest of three geologic eras of the Phanerozoic Eon. It is the longest of the Phanerozoic eras, lasting from 541 to 251.902 million years ago, and is subdivided into six geologic periods : the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian. The Paleozoic comes after the Neoproterozoic Era of the Proterozoic Eon and is followed by the Mesozoic Era.
A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets accepted by the IAU are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars. Among astronomers who use the geophysical definition of a planet, the Moon, Io and Europa may also be considered terrestrial planets. The terms "terrestrial planet" and "telluric planet" are derived from Latin words for Earth, as these planets are, in terms of structure, Earth-like. These planets are located between the Sun and the asteroid belt.
The Virgo Supercluster or the Local Supercluster is a mass concentration of galaxies containing the Virgo Cluster and Local Group, which in turn contains the Milky Way and Andromeda galaxies. At least 100 galaxy groups and clusters are located within its diameter of 33 megaparsecs. The Virgo SC is one of about 10 million superclusters in the observable universe and is in the Pisces–Cetus Supercluster Complex, a galaxy filament.
The Aermacchi or Macchi MB-326 is a light military jet trainer designed in Italy. Originally conceived as a two-seat trainer, there have also been single and two-seat light attack versions produced. It is one of the most commercially successful aircraft of its type, being bought by more than 10 countries and produced under licence in Australia, Brazil and South Africa. It set many category records, including an altitude record of 56,807 ft on 18 March 1966. More than 800 MB-326s were constructed between 1961–1975.
Astronautics is the theory and practice of travel beyond Earth's atmosphere into outer space. Spaceflight is one of its main applications and space science its overarching field.
Johann Wolfgang Döbereiner was a German chemist who is best known for work that foreshadowed the periodic law for the chemical elements, and for inventing the first lighter, which was known as the Döbereiner's lamp. He became a professor of chemistry and pharmacy at the University of Jena.
In astronomy, a blue giant is a hot star with a luminosity class of III (giant) or II. In the standard Hertzsprung–Russell diagram, these stars lie above and to the right of the main sequence.
Vostok was a family of rockets derived from the Soviet R-7 Semyorka ICBM and was designed for the human spaceflight programme. This family of rockets launched the first artificial satellite and the first crewed spacecraft (Vostok) in human history. It was a subset of the R-7 family of rockets.
Rosie the Riveter World War II Home Front National Historical Park is a United States national historical park located in Richmond, California, near San Francisco. The park preserves and interprets the legacy of the United States home front during World War II, including the Kaiser Richmond Shipyards, the Victory ship SS Red Oak Victory, a tank factory, housing developments and other facilities built to support America's entry into World War II. In particular, the role of women and African-Americans in war industries is explored and honored.
GQ Lupi is a T Tauri variable star approximately 495 light-years away in the constellation of Lupus. The star is young and has about 70% of the Sun's mass.
In musical composition, a sound mass is the result of compositional techniques, in which, "the importance of individual pitches," is minimized, "in preference for texture, timbre, and dynamics as primary shapers of gesture and impact," obscuring, "the boundary between sound and noise".
False balance, also bothsidesism, is a media bias in which journalists present an issue as being more balanced between opposing viewpoints than the evidence supports. Journalists may present evidence and arguments out of proportion to the actual evidence for each side, or may omit information that would establish one side's claims as baseless. False balance has been cited as a major cause of spreading misinformation.
The 326th Infantry Division was the only Eastern Front veteran division to have fought in the battles of Normandy. It was formed on November 9, 1942, shortly after its return from Southern Russia to serve as an occupation force in France. On May 5, 1943, the division was transformed into a static division. The 326th Infantry Division was destroyed during the Battle of Normandy. A new 326th Volksgrenadier Division was formed on September 4, 1944, in Galanta by redesignation of the new 579th Volksgrenadier Division of the 32nd mobilisation wave. In 1945 the division, separated into two groups, entered U.S. captivity in the Ruhr Pocket and Harz respectively.
Progress M-63, identified by NASA as Progress 28P, was a Progress spacecraft used to resupply the International Space Station. It was a Progress-M 11F615A55 spacecraft, with the serial number 363.
TX Camelopardalis is a Mira-type variable star in the constellation Camelopardalis. It is a classical long period variable star with pulsational period of 558.7 days. Water masers have been observed around the star.
Chi2 Hydrae, Latinised from χ2 Hydrae, is a binary star system in the equatorial constellation of Hydra. Based upon an annual parallax shift of 4.6 mas as seen from Earth, it is located roughly 710 light years from the Sun. It is visible to the naked eye with a combined apparent visual magnitude of 5.71.
Wolf 1061c or WL 1061c is an exoplanet orbiting within the habitable zone of the red dwarf star Wolf 1061 in the constellation Ophiuchus, about 13.8 light years from Earth, making it the fifth closest known, potentially habitable, and confirmed exoplanet to Earth, yielding interest from astronomers. It is the second planet in order from its host star in a triple planetary system, and has an orbital period of 17.9 days. Wolf 1061c is classified as a super-Earth exoplanet as its estimated radius is greater than 1.5 R⊕.
An ultra-cool dwarf is a stellar or sub-stellar object of spectral class M that has an effective temperature under 2,700 K. TRAPPIST-1 is one of the best known examples of an ultra-cool dwarf star. The category of ultra-cool dwarf stars was introduced in 1997 by J. Davy Kirkpatrick, Todd J. Henry, and Michael J. Irwin. Today it includes very low mass M-dwarf stars with spectral types of M7 and later, and extends beyond the coolest stars to brown dwarfs as cool as spectral type T6.5. Together, they represent about 15% of astronomical objects in the stellar neighborhood of the Sun.
K2-72e (also known by its EPIC designation EPIC 206209135.04), is a confirmed exoplanet, likely rocky, orbiting within the habitable zone of the red dwarf star K2-72, the outermost of four such planets discovered in the system by NASA's Kepler spacecraft on its "Second Light" mission. It is located about 217.1 light-years (66.56 parsecs, or nearly 2.0538×1015 km) away from Earth in the constellation of Aquarius. The exoplanet was found by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured.