astronomers 2 [vynechat] astronómovia 2 [vynechat] celestial mechanics 2 [vynechat] fyzici 2 [vynechat] gravity field theory 2 [vynechat] nebeská mechanika 2 [vynechat] physicists 2 [vynechat] teoretická astronómia 2 [vynechat] teória gravitačného poľa 2 [vynechat] theoretical astronomy 2 [vynechat]