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Alt: A hobbit with curly hair is holding a book in a field. Presumably he is connected to the network.

During the fifty years since the launch of the Viking spacecraft to Mars, our view of the red planet has changed from hostile desert to a world which was once covered in water, and which may just poss...

Does the environment of a galaxy directly influence the kinematics of its bar? We present observational evidence that bars in high-density environments exhibit significantly slower rotation rates than...

U.S.-Chinese tensions have left nearly complete observatory in limbo, jeopardizing research into pulsars and other celestial objects

View high resolution digitized images of Bodleian Library Arch. H c.12 Johannis Hevelii Selenographia: sive, Lunæ descriptio; : atque accurata, tam macularum ejus, quam motuum diversorum, aliarumque omnium vicissitudinum, phasiumque, telescopii ope deprehensarum, delineatio. In quâ simul cæterorum omnium planetarum nativa facies, variæq́uê observationes, præsertim autem macularum solarium, atque jovialium, tubospicillo acquisitæ, figuris accuratissimè æri incisis, sub aspectum ponuntur ... Addita est, lentes expoliendi nova ratio; ...