Astronomy Picture of the Day . A Lonely Neutron Star . ... Over the years astronomers have watched (at a safe distance ...) as, 6,000 light years from Earth in the southern constellation Pyxis, a binary star known as T Pyxidis repeatedly produces these fearsome explosions. Moon Occults Saturn . ... Today is the first day of Autumn in the Northern Hemisphere of Planet Earth. ... Since Earth is much closer to the Sun than Saturn, only the day side of the planet is visible from the Earth. ...