... Bad Astronomy . ... Mad Science . ... How fast must an object be travelling so the sound I perceive as it directly passes me will drop in pitch exactly one octave? ... When an object is moving past another object, any sound emitted by the first object is changed in pitch due to the relative motion. ... wl(emitted)" is the wavelength of sound emitted by the object at rest, "wl(heard)" is the wavelength you hear from the object, "v" is the velocity of the object, and "c" is the speed of sound. ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Bad News
• Phil Plait's Bad Astronomy: Misconceptions: Planet X and Orbital Math

... Proximity e#ects of com­ ponents (reflection of radiation and surface gravity darkening) are taken into account. ... As an example, we consider the Algol (# Persei) system, where an eclipsing pair (Algol A­B) is accompanied by the third component (Algol C). ... The surface temperature distribution for Algol A­B system before (upper plot) and after (lower plot) correction for temperature due to the irradiation e#ect. ... We solve this equation by the iterative Newton­Raphson method. ...

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... The faces of the cube are divided into square bins, where the number of bins along each edge is a power of 2, selected to produce the desired bin size. ... The equal-area tranformation is performed using the following equations: TAN(mu) = (12/pi)*(theta+ACOS(SIN(theta)*SIN(pi/4))-pi/2) (3-21) TAN(nu) = SQRT((SEC(mu))**2*(1-COS(theta))/(1-COS(ATAN(SEC(theta))))) (3-38) . ... Taking the sine of both sides gives SIN(theta)*COS((pi/12)*TAN(mu)) - COS(theta)*SIN((pi/12)*TAN(mu)) = SIN(theta)/SQRT(2) . ...

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• Intro
• Supernova Magnitude.

... This is perhaps the most common question asked by visitors to the planetarium. ... This is known as the Drake Equation and reads as follows: N = R* fp ne fl fi fc L N is the number of communicating civilizations in the galaxy R* represents the average rate of star formation in the Milky Way Galaxy fp is the fraction of those stars that have planets around them ne is the number of planets per star that are capable of sustaining life fl is the fraction of planets in ne where life ...

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• Dark matter and dark energy: the deepest mysteries in astronomy | Astronotes

Unno, W. Line Formation of a Normal Zeeman Triplet http://adsabs.harvard.edu/abs/1956PASJ.. ... 108U Moe, Olav Kjeldseth A Generalized Theory for Line Formation in a Homogeneous Magnetic Field http://adsabs.harvard.edu/abs/1968SoPh.. ... 24S Landi Degl'Innocenti, Egidio; Landi Degl'Innocenti, Maurizio Quantum Theory of Line Formation in a Magnetic Field http://adsabs.harvard.edu/abs/1972SoPh.. ... 235H Sazonov, V. N. Polarization in Zeeman-split absorption lines http://adsabs.harvard.edu/abs/1975SvA.. ...

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... The described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...

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... Published by the Bureau of Astronomical Communications . ... TITLE OF THE ARTICLE IN RUSSIAN . ... This text contains Instructions for our Authors; at the same time, it shows the general layout of a contribution to the Astronomicheskii Tsirkulyar as it will appear published in the electronic form or printed on paper. ... The text of your article starts here. We accept articles in all branches of astronomy. ... 1543-1548, Information for Authors), text taped and figures drawn on paper. ...

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... Phyllosilicates may form in EKB bodies during aqueous alteration [7]. ... The time m required to heat a large EKB body to the water - ice melting point and to melt the ice in its interiors can be estimated from the equation 0 Q exp(-t )dt = Tm T0 c p dT + L f m w , (1) where T0 = 30 K is the adopted value for the initial temperature of the body , Tm = 273 K is the melting temperature of water ice (a good approximation to at P 25 MPa, characteristic for interiors of a EKB ...

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• http://selena.sai.msu.ru/Pug/Publications/ms42/m42_60.pdf
• http://selena.sai.msu.ru/Pug/Publications/m44_70_pugacheva.pdf
• http://selena.sai.msu.ru/Bus/Publications/EM&P2003(Bus-Dor-Mak).pdf

... On the basis of hypothesis about Solar s ystem formating from endo-Galactic Vortex, stated by е.л. Trunaev, who have acquainted the author of the present work with his manuscript in 1991 during personal contact , the results of attempt to apply its main rules to some calculations at the Solar system actually and at planets satellite systems are below stated. ... orbit in . ... All satellite systems of planets, as well as the Solar system, are formed from two- branch pre-planetary (pre-Solar)...

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NASA JOHNSON SPACE CENTER ORAL HISTORY PROJECT BIOGRAPHICAL DATA SHEET NAME: Robert Clifford Ried, Jr. ... NASA Apollo Working Paper No 1046, 5 June 1962. ... Johnson Space Center Oral History Project Robert C. Ried, Jr. ... REF : Robert C. Ried NASA Biographical Data Sheet (March 1995), Robert C. Ried Biographical File, Public Affairs Office, Lyndon B. Johnson Space Center, Houston, TX. ... Service Record Card, Personnel File, Human Resources Office, Lyndon B. Johnson Space Center, Houston, TX. ...

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• http://www.jsc.nasa.gov/history/oral_histories/VaughanCA/CAV_BIO.pdf