(of stellar atmosphere)
71Astronomy — (from the Greek words astron (ἄστρον), star , and nomos (νόμος), law ) is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth s atmosphere (such as the cosmic… …
72Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
73IK Pegasi — Starbox begin name=IK Pegasi Starbox image caption=Location of IK Pegasi. Starbox observe epoch=J2000 ra=RA|21|26|26.6624cite web title=SIMBAD Query Result: HD 204188 Spectroscopic binary publisher=Centre de Données astronomiques de Strasbourg… …
74chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… …
75Planet — This article is about the astronomical object. For other uses, see Planet (disambiguation) …
76Naine Blanche — Traduction terminée White dwarf → …
77Naine blanche —  Ne pas confondre avec Étoile blanche de la séquence principale Sirius B est une naine blanche visible comme un petit point en bas à gauche de …
78Naines blanches — Naine blanche Traduction terminée White dwarf → …
79eclipse — eclipser, n. /i klips /, n., v., eclipsed, eclipsing. n. 1. Astron. a. the obscuration of the light of the moon by the intervention of the earth between it and the sun (lunar eclipse) or the obscuration of the light of the sun by the intervention …
80Pluto — This article is about the dwarf planet. For other uses, see Pluto (disambiguation). Pluto   …
