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Physics and Astronomy

Life-cycle of the Sun; sizes are not drawn to scale.
Views: 897
Filesize: 48.42kB
Date: Jan 26, 2013
 Evolution of the Sun's luminosity, radius and effective temperature compared to the present Sun
Views: 943
Filesize: 32.91kB
Date: Jan 26, 2013
 Stereo Image taken by NASA STEREO Probes launched in 2006; utilizing two Spacecrafts to image the Su
Views: 1004
Filesize: 48.37kB
Date: Jan 26, 2013
 Taken by Hinode's Solar Optical Telescope on January 12, 2007, this image of the Sun reveals th
Views: 946
Filesize: 86.71kB
Date: Jan 26, 2013
During a total solar eclipse, the solar corona can be seen with the naked eye, during the brief peri
Views: 1063
Filesize: 21.87kB
Date: Jan 26, 2013
 The effective temperature, or black body temperature, of the Sun (5777 K) is the temperature a black
Views: 1188
Filesize: 83.62kB
Date: Jan 26, 2013
 The structure of the Sun
Views: 904
Filesize: 312.08kB
Date: Jan 26, 2013
 The Sun
Views: 610
Filesize: 117.95kB
Date: Jan 26, 2013
Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation.
Views: 887
Filesize: 159.55kB
Date: Jan 26, 2013
 The carbon-nitrogen-oxygen cycle of The Sun
Views: 1029
Filesize: 99.76kB
Date: Jan 26, 2013
 The Sun - Overview of the proton-proton chain
Views: 802
Filesize: 48.71kB
Date: Jan 26, 2013
 Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Views: 1109
Filesize: 83.41kB
Date: Jan 26, 2013
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Views: 1281
Filesize: 87.21kB
Date: Jan 26, 2013
 The reflection nebula NGC 1999 is brilliantly illuminated by V380 Orionis (center), a variable star
Views: 1089
Filesize: 36.75kB
Date: Jan 26, 2013
 Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Views: 1086
Filesize: 255.8kB
Date: Jan 26, 2013
 The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo
Views: 1012
Filesize: 70.69kB
Date: Jan 26, 2013
The Sun is the nearest star to Earth.
Views: 838
Filesize: 191.16kB
Date: Jan 26, 2013
 An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun
Views: 919
Filesize: 58.24kB
Date: Jan 26, 2013
 Alpha Centauri A and B over limb of Saturn
Views: 877
Filesize: 16.66kB
Date: Jan 26, 2013
 The constellation of Leo as it can be seen by the naked eye. Lines have been added.
Views: 829
Filesize: 41.32kB
Date: Jan 26, 2013
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