It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
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.
9
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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It 'snows' metal on Venus.
13
The ashes of the man who discovered Pluto are currently en route to dwarf planet, scheduled to arrive on the 14th of July, 2015.
11
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Summer on Uranus lasts for 21 years.
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