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Detailed explanation-1: -Washington, May 12 (IANS) Combining observations from NASA’s Hubble and Spitzer space telescopes, researchers have detected strong water signature in the atmosphere of a distant Neptune-sized planet.

Detailed explanation-2: -Answer. Located about 437 light years away, HAT-P-26b orbits a star roughly twice as old as the Sun. The researchers determined that HAT-P-26b’s atmosphere is relatively clear of clouds and has a strong water signature, although the planet is not a water world.

Detailed explanation-3: -Neptune has six known rings. Voyager 2’s observations con-firmed that these unusual rings are not uniform but have four thick regions (clumps of dust) called arcs. The rings are thought to be relatively young and short-lived. Neptune has 13 known moons, six of which were discovered by Voyager 2.

Detailed explanation-4: -Piaulet and colleagues observed exoplanets Kepler-138c and Kepler-138d with NASA’s Hubble and the retired Spitzer space telescopes and discovered that the planets could be composed largely of water.

Detailed explanation-5: -It was the first planet found with the aid of a telescope, Uranus was discovered in 1781 by astronomer William Herschel, although he originally thought it was either a comet or a star.