28 relations: Alex Filippenko, Apparent magnitude, Binary star, Chandrasekhar limit, Constellation, Crab Nebula, Earth, Friedrich Wilhelm Argelander, Gamma ray, Gamma-ray burst, Hour, Hubble Space Telescope, Human, Monthly Notices of the Royal Astronomical Society, Nova, Nova remnant, Ozone layer, Parsec, Pyxis, Satellite flare, Scientific American, Super soft X-ray source, Type Ia supernova, University of California, Berkeley, Villanova University, White dwarf, X-ray, 2MASS.
Alexei Vladimir "Alex" Filippenko (born July 25, 1958) is an American astrophysicist and professor of astronomy at the University of California, Berkeley.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
A binary star is a star system consisting of two stars orbiting around their common barycenter.
The Chandrasekhar limit is the maximum mass of a stable white dwarf star.
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant in the constellation of Taurus.
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
Friedrich Wilhelm August Argelander (22 March 1799 – 17 February 1875) was a German astronomer.
A gamma ray or gamma radiation (symbol γ or \gamma), is penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei.
In gamma-ray astronomy, gamma-ray bursts (GRBs) are extremely energetic explosions that have been observed in distant galaxies.
An hour (symbol: h; also abbreviated hr.) is a unit of time conventionally reckoned as of a day and scientifically reckoned as 3,599–3,601 seconds, depending on conditions.
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
Humans (taxonomically Homo sapiens) are the only extant members of the subtribe Hominina.
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
A nova (plural novae or novas) or classical nova (CN, plural CNe) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star, that slowly fades over several weeks or many months.
A nova remnant is made up of the material either left behind by a sudden explosive fusion eruption by classical novae, or from multiple ejections by recurrent novae.
The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation.
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
Pyxis is a small and faint constellation in the southern sky.
Satellite flare, also known as satellite glint, is the visible phenomenon caused by the reflective surfaces of passing satellites (such as antennas, SAR or solar panels), reflecting sunlight toward the Earth below and appearing as a brief, bright "flare".
Scientific American (informally abbreviated SciAm) is an American popular science magazine.
A luminous supersoft X-ray source (SSXS, or SSS) is an astronomical source that emits only low energy (i.e., soft) X-rays.
A type Ia supernova (read "type one-a") is a type of supernova that occurs in binary systems (two stars orbiting one another) in which one of the stars is a white dwarf.
The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public research university in Berkeley, California.
Villanova University is a private research university located in Radnor Township, a suburb northwest of Philadelphia, Pennsylvania, within the Archdiocese of Philadelphia in the United States.
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
X-rays make up X-radiation, a form of electromagnetic radiation.
The Two Micron All-Sky Survey, or 2MASS, was an astronomical survey of the whole sky in the infrared spectrum and one of the most ambitious such projects.