... Comet Hyakutake's Orbit . ... The orbits of the Earth and this brightening comet are shown in the above diagram. The blue disk is bounded by the circular orbit of the Earth about the central Sun. ... A stunning map of this distant, diminutive planet, the first based on direct images, was revealed late last week in a Hubble Space Telescope press release. ... Arecibo: The Largest Telescope . ... The Arecibo radio telescope is currently the largest single-dish telescope in the world. ...