Results 291 to 300 of about 9,521 (349)

Astronomy by Observation. an Elementary Text-Book for High-Schools and Academies

, 2014
Eliza A Bowen
openalex   +1 more source

The abundances of carbon and nitrogen in the atmospheres of classical Be stars. [PDF]

Astrophys Space Sci
Peters GJ, Gayley KG, Rast RG, Vink JS, Drake JJ.   +4 more
europepmc   +1 more source

Discovery of the most compact 3+1-type quadruple star system TIC 120362137. [PDF]

Nat Commun
Borkovits T, Rappaport SA, Chen HL, Torres G, Mitnyan T, Kostov VB, Powell BP, Pribulla T, Zasche P, Bíró IB, Csányi I, Czavalinga DR, Dencs Z, Garai Z, Kolář J, Cagaš P, Henzl Z, Kaye T, Kučáková H, Mašek M, Uhlař R.   +20 more
europepmc   +1 more source

Photometric light curve analysis of three overcontact binary systems: ATO J255.8159+16.8821, CRTS J034336.4+264312, and NSVS 2669503. [PDF]

Sci Rep
Shokry A, Darwish MS, El-Sadek MA, Hamed GM, Zead I, Takey A.   +5 more
europepmc   +1 more source

A radio oval above Earth's auroral oval. [PDF]

Sci Adv
Wu S, Whiter DK, Lamy L, Taubenschuss U, Zarka P, Collet B, Wang X, Fischer G, Ning H, Chen Y, Wang M, Ye S, Yao Z, Kurth WS, Luan X.   +14 more
europepmc   +1 more source

Observational Neutrino Astronomy [PDF]

Science, 1965
© 1965 American Association for the Advancement of Science.
Bahcall, John N.
core   +5 more sources

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Observations on Observational and Other Astronomy

Science, 1966
Willem J Luyten, W J Luyten
exaly   +3 more sources

Geographical distribution of observational activities for astronomy [PDF]

Astronomy and Astrophysics, 1998
The geographical distribution of astronomy-related observational activities is illustrated from comprehensive and up-to-date samples of professional institutions, of public observatories and planetariums, and of associations. Results are commented and,
A Heck
exaly   +2 more sources

US and Turkish preschoolers’ observational knowledge of astronomy [PDF]

International Journal of Science Education, 2016
The purpose of this cross-cultural study was to describe and compare US and Turkish children's observational knowledge of the day and night cycle and to identify similarities predicted by framework theory. Fifty-six (27 US and 29 Turkish) young children (
Mesut Sackes, Kathy Cabe Trundle
exaly   +2 more sources