Results 11 to 20 of about 233,898 (339)

How Dark Matter Came to Matter [PDF]

, 2017
The history of the dark matter problem can be traced back to at least the 1930s, but it was not until the early 1970s that the issue of 'missing matter' was widely recognized as problematic.
Bertone, Gianfranco, de Swart, Jaco, van Dongen, Jeroen   +2 more
core   +3 more sources

From Quasars to Extraordinary N-body Problems [PDF]

, 1998
We outline reasoning that led to the current theory of quasars and look at George Contopoulos's place in the long history of the N-body problem. Following Newton we find new exactly soluble N-body problems with multibody forces and give a strange ...
Aarseth S.J., Antonov V.A., Betteweiser E., Blandford R.D., Contopolous G., Contopolous G., Eddington A.S., Ekers R.D., Heggie D., Henon M., Henon M., Lynden-Bell D., Lynden-Bell D., Lynden-Bell D., Lynden-Bell D., Lynden-Bell D., Lynden-Bell D., Lynden-Bell D., Lynden-Bell D., Michell J., Pringle J.E., Shakura N.I., Shakura N.I., THIRRING W.   +23 more
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Anders Celsius’ Contributions to Meridian Arc Measurements and the Establishment of an Astronomical Observatory in Uppsala

Open Astronomy, 2011
Astronomy has been on the curriculum of Uppsala University from at least the middle of the 15th century. However, since Uppsala also was the ecclesiastical centre of Sweden, the acceptance of new ideas, such as the Copernican heliocentric system, was ...
Stempels H. C.
doaj   +1 more source

Some Pages of History of the Specula Dorpatensis, the Elder Sister of Pulkovo Observatory

Open Astronomy, 2011
This paper gives an overview of the history of Tartu (Dorpat) Observatory.
Abalakin Victor K.
doaj   +1 more source

Some Relations Between the Stockholm and Tartu Observatories During the 19th Century

Open Astronomy, 2011
This article introduces the Royal Swedish Academy of Sciences and the old Stockholm Observatory. It focuses on the Swedish astronomers Jöns Svanberg and Nils H. Selander, and on their work with the Struve Geodetic Arc.
Lindberg Michael
doaj   +1 more source

Indian Sine Table of 36 Entries

History of Science in South Asia, 2019
Trigonometry is an indispensable tool of Indian mathematical astronomy. The concept of  trigonometry originated in Greece and it was transmitted to India together with astronomy.
Michio Yano
doaj   +1 more source

The NASA Astrophysics Data System: Overview [PDF]

, 2000
The NASA Astrophysics Data System Abstract Service has become a key component of astronomical research. It provides bibliographic information daily, or near daily, to a majority of astronomical researchers worldwide.
Accomazzi, A., Eichhorn, G., Grant, C., Kurtz, M. J., Murray, S. S., Watson, J. M.   +5 more
core   +2 more sources

Un astrónomo, tres continentes, siete instituciones y millares de estrellas. La experiencia global de Jürgen Stock en los inicios de la astronomía en Chile

Nuevo mundo - Mundos Nuevos, 2022
In 1959, German astronomer Jürgen Stock arrived in Chile to do site testing for an American project of astronomical observation. We can understand this expedition as the beginning of a long and accelerated path towards astronomical development in Chile ...
Bárbara Silva
doaj   +1 more source

On the orientation of Roman towns in Italy [PDF]

, 2007
As is well known, several Roman sources report on the existence of a town foundation ritual, inherited from the Etruscans, which allegedly included astronomical references.
Magli, Giulio
core   +2 more sources

Introduction to high-energy gamma-ray astronomy [PDF]

, 2015
The present issue is the first of of a two-volume review devoted to gamma-ray astronomy above 100 MeV which has witnessed considerable progress over the last 20 years.
Degrange, Bernard, Fontaine, Gérard
core   +4 more sources