FIRST AIRED: February 22, 2017

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>> The discovery gives us a hint that finding a second Earth is not just a matter of if, but when.>> New hope for those who truly believe we are not alone. Seven Earth sized planets that could potentially harbor life, revealed by NASA on Wednesday. The discovery made by a global team of scientists studying a tiny star, known as TRAPPIST-1, around which they orbit.
>> Three of these planets, marked in green, are in the habitable zone, where liquid water can pool on the surface. In fact, with the right atmospheric conditions, there could be water on any of these planets.>> TRAPPIST-1 also known as an ultra cool dwarf star, not because of the awesome announcement, but due to a surface temperature much cooler than that of the Sun.
It's also only about 40 light-years away or roughly 235 trillion miles. Not exactly commutable, but close enough for astronomers to get a detailed look at the planet's surfaces and atmospheres as they assess whether any of them are, in fact, a place some call home.