προγράμματαProject CLEA - Gettysburg College CLEA Exercise - The Hubble Redshift-Distance Relation δωρεάν CLEA Exercise - The Classification of Stellar Spectra δωρεάν CLEA Exercise - Photoelectric Photometry of the Pleiades CLEA Exercise - Radio Astronomy of Pulsars - CLEA Exercise - The Flow of Energy out of the Sun δωρεάν CLEA Exercise - Dying Stars and the Birth of the Elements CLEA Exercise - The Large-Scale Structure of the Universe δωρεάν CLEA Exercise - Transits of Venus and Mercury δωρεάν CLEA Exercise - The Rotation Rate of Mercury CLEA Exercise - Rotation of the Sun δωρεάν CLEA Exercise - Rotation of the Sun δωρεάν VIREO - The VIRtual Educational Observatory (Version 1.504) CLEA Toolkit for CCD Astrometry - δωρεάν CLEA Exercise - Rotation of the Sun (V. 1.014 - Small Database) CLEA Exercise - The Revolution of the Moons of Jupiter 1 2 3 >>