In the last 7 years, humanity has discovered 43 potentially habitable planets.
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One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
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A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
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Lightning strikes about 6,000 times per minute on this planet!
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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
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The Earth gets 100 tons heavier every day due to falling space dust.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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