61.   Its instruments will also be designed to determine the constituents of atmospheres, which could reveal signs that the planets may be habitable.

62.   Later, he said there might be two planets.

63.   New research also hints that habitable planets may be more common than skeptics have assumed.

64.   No one knows yet whether the planet has always been so close to the star, or even what it is made of.

65.   Not that the newly discovered planet is exactly the garden of Eden.

66.   One of the reasons this planet is inhabitable is that heat is trapped inside the blanket of life-giving gases in our atmosphere.

67.   Our own planet will likely be a very different place when next they meet.

68.   Outside of Olympus, the planet is still a dangerous place.

69.   Others argued that the planet was never in as serious shape as some have contended, because they always underestimated human ingenuity.

70.   Planets are circular.