More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
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
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
If Earth's history was condensed into twenty-four hours, life would've appeared at around 4am, land plants at 10:24pm, dinosaur extinction at 11:41pm, and human history would’ve began at 11:58:43pm.
21
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The United States has paved enough roads to circle the Earth over 150 times.
72
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25